Pieter Grootenboer

Koning & Hartman BV provides maintenance and installation services for computer systems and automation solutions. Its products and solutions includes radios, radiotelephones, windows embedded, mobile computers, industrial computers, PLC's, frequency inverters, industrial robots, HMI, KH information server, KVM solutions, 19-inch solutions, industrial power supplies, sensors, level measurement systems, industrial network solutions, solenoid valves, indoor mobility, network solutions, business communication and internet of things. The company was founded in 2005 and is headquartered in Amsterdam, the Netherlands.

Part of DELTA Fiber Nederland BV, Cogas Kabel Infra BV provides internet services. The company is based in Almelo, Netherlands. The Dutch company was founded in 2012. Pieter Grootenboer has been the CEO of the company since 2013. Cogas Kabel Infra was acquired by DELTA Fiber Nederland BV on December 18, 2020.

DELTA Fiber Netwerk BV provides broadband services. The private company is based in Schiedam, Netherlands. and has subsidiaries in Netherlands. The Dutch company was founded in 1981. The CEO is Pieter Grootenboer.

Esprit Telecom BV provides voice over internet protocol and internet hosting services. It provides telecommunication service and operates a mobile network. The company was founded in 1993 and is headquartered in Utrecht, the Netherlands.