Qiu Dong Liu
Voorzitter bij CNOOC ENERGY TECHNOLOGY & SERVICES LIMITED
Momenteel actieve connecties
Naam | Geslacht | Leeftijd | Verwante bedrijven | Samenwerking |
---|---|---|---|---|
Shun Qiang Zhao | M | 56 | 4 jaar | |
De Bin Xiao | M | 55 | 11 jaar | |
Tao Lu | M | 55 | 4 jaar | |
Koon Sang Jong | M | 75 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Min Xiong | M | 48 | 4 jaar | |
Ravi Shankar Gopal Onbathuveli | M | - |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Xiao Chuan Jiang | M | 67 | 2 jaar | |
Wen Long Zong | M | 51 | 2 jaar | |
Lam Kwong Kwok | M | 68 | - | |
Lai Kuen Chiu | F | 64 | - | |
Xin Yao | M | 45 | 2 jaar | |
Yue Yong Wang | M | 59 | 2 jaar | |
Xin Sheng Cheng | M | 61 | 9 jaar | |
Weizhou Sun | M | 53 | 2 jaar | |
Wing Lap Fung | M | 63 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Joo Ling Koh | F | 60 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 31 jaar |
Chao Liu | M | 43 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 9 jaar |
Salihin bin Abang | M | 52 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
So Kuen Chan | F | 48 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 16 jaar |
Tuck Wai Lee | M | 60 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Thomas Ong | M | - |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Tack Low Eng | M | 49 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Hai Yan Zou | M | 59 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Stephen Leong | M | 82 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 18 jaar |
Tai Yan Lai | M | 51 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 7 jaar |
Tong Man Lok | M | 78 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 37 jaar |
Fu Keung Chiu | M | 55 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 13 jaar |
Hock Chye Lau | M | 57 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Bing Liu | M | 51 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Shui Fung Lau | M | 57 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Poh Hong Ong | F | 47 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Shung Kit Yiu | M | 51 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Boon Huat Ong | M | 55 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 27 jaar |
Yang Li | M | 49 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Yu Ding | M | 50 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Phil Jing Zhou | M | - |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Kam Mooi Hew | F | 67 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Chun Leung Chan | M | 36 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 4 jaar |
Ip Kuen Ngan | M | 58 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 19 jaar |
Li Xiang Wan | M | 37 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 5 jaar |
Qin Wang | F | 35 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Wang Yu | F | 44 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 11 jaar |
Jiang Yann Hun | M | 56 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 25 jaar |
Huichuan Zhou | M | 51 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Hong Kang | M | 42 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Jian Li | M | 46 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 10 jaar |
Shen Feng | M | 35 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Ming Yong Tham | M | 62 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Srinivasan Vaidyanathan | M | 60 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Gaik See Ooi | F | 60 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Ya Li | F | 41 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Huat Lai Kian | M | 57 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
J. G. Benildus P. Tissera | M | - |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Wing Hong Chan | M | 53 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 25 jaar |
Tze Cheung Lau | M | 61 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 23 jaar |
Kon Hoan Tan | M | 53 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Ajith Menon | M | - |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Cheung Hung Li | M | 73 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Leong Yow Lee | M | 68 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Wing Hon Leung | M | 62 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Brij Gopal Daga | M | 80 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Oi Lai Li | F | 50 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 10 jaar |
Lai Ping Lui | F | 59 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
So Mui Li | F | 70 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Siufai Lau | M | 66 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Zu Ming Qian | M | 61 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 11 jaar |
Nan Jiang | M | 51 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Wing Kuen Albert Wong | M | 72 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 19 jaar |
Ying Jie Sha | M | 67 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Chooi Leong Seah | M | 65 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Lung Tak Wong | M | 76 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Siu Fai Cheong | M | 52 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Philip M. Jamieson | M | - |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Yuen Man Lam | F | 54 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Ban Tin Lau | M | 68 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Ahmad Faisal bin Zakaria | M | 65 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Ka Ho To | M | 43 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Daniel He | M | 42 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Teck Shu Lim | M | 56 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Jean Perrotti | M | 61 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Man Fai Chui | M | 55 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Steward Lee | M | 56 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Wing Hung Lo | M | - |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Shuk Yee Yuen | M | - |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Kam Fan Lee | M | 62 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Kheng Min Chew | M | 85 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Ping Chan | F | 53 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Sai Tong Lou | M | 56 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Wai Chun Tsang | F | 69 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Yuet Sim Foo | F | 54 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Wai Meng Yee | M | 55 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 16 jaar |
Chan Wing Lau | M | 67 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Saw Hua Ng | F | 56 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 28 jaar |
Ioannis Charilaou | M | 58 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 26 jaar |
Kwong Fuk Donald Chan | M | - |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Chin Wan Shoom | M | 59 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Chun Kei To | M | 57 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Gerald Edwin Law | M | 47 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | - |
Dong Guang Han | M | 40 |
The Association of International Accountants
The Association of International Accountants Miscellaneous Commercial ServicesCommercial Services The Association of International Accountants operates as a membership body for professional accountants. The non-profit company is based in Newcastle-upon-Tyne, UK. | 1 jaar |
Relatiegrafiek
Connectie in verschillende bedrijven
Statistieken
Land | Connecties | % van het totaal |
---|---|---|
Verenigd Koninkrijk | 87 | 87.88% |
China | 12 | 12.12% |
Australië | 0 | -.--% |
Ouderdom van de connecties
Actief
Verleden
Man
Vrouw
Besturend
Uitvoerend
Oorsprong van de connecties
- Beurs
- Insiders
- Qiu Dong Liu
- Persoonlijk netwerk