WETICO’s history is mainly that of Saudi Berkefeld Filter Co Ltd which was and still is based in Riyadh, Saudi Arabia. The Company is involved in the design, manufacturing, installation and servicing of Water, Sewage and Wastewater Treatment Plants. Saudi Berkefeld was a joint venture between Abunayyan Trading Company and Sterling Berkefeld Filter Germany. This joint venture was established in 1990; although the partnership had been operating for more than 20 years, Berkefeld Filter Co., decided to leave WETICO in 2001, and as a result OSTAR Holdings, a UK based investment and consulting company came in as active equal voting partner with the previous Saudi partner helping to build the company into what it is today. Under OSTAR’s management, WETICO increased revenue more than 10 times in less than a decade and increased the employee number to over 400 from less than 100.