... products; that is: Material control, Machining quality control, In-coming material inspection, Assembly line quality control, 100% ... delivery.3) large scale professional valve manufacturer Specialize in manufacturing valves,pipe fittings,faucets etc for 15 years,"JKLONG" ... brand" "High-tech enterprise" "Famous brand of Chinese valves", JKLONG team will provide you professional,satisfactory OEM/ODM ...