The company has passed the 1994, 2000, 2008 ISO9000 quality management system certification, ISO14001 - 2004 environmental management system certification and OHSAS18001 - 2007 occupational health and safety management system certification, self designed and developed PEX pipes, ball valves, and corner valves are also produced in North American countries and regions of NSF, CSA, UPC, UL and other production. Product certification.