Jonathan Blayr Munz

GSA Group provides construction services. It conducts overseas businesses through fully owned subsidiaries in the USA, the UK, France, New Zealand and Hong Kong. The company is located in Melbourne, Australia.

Part of Reliance Worldwide Corp. Ltd., John Guest GmbH is a German company that wholesales and installs gas, water, and heating equipment. The company is based in Bielefeld, Germany. The CEOs are Robert Gerard Bollman, Jonathan Blayr Munz. The company was founded in 1990.

Part of Reliance Worldwide Corp. Ltd., Reliance Worldwide Corporation Underfloor Heating Ltd. is a provider of quality water control systems, plumbing solutions, and plumbing fixtures for domestic, commercial, and industrial applications. Founded in 1986, the company is based in Evesham, UK. The British company's robust brass-body fittings are designed to withstand high pressure and a range of system requirements, making them ideal for small to large commercial and industrial applications. The company's SharkBite® plumbing systems range offers a versatile range of metal push-fit fittings and valves. Reliance Water controls is a leader in water flow and temperature control solutions and the largest manufacturer of push-fit plumbing fittings.