Profile: Weidouli Valves Co., Ltd specializes in the research, development, production, and sales of valves. We are an ISO 9001 certified company. We offer titanium, nickel alloy, zirconium, and general valves. Titanium trunnion type ball valves are used in chemical, air defense, petrochemicals, marine development, and power industries. We also provide ceramic ball, titanium ball & stems, hastelloy discs, and titanium elbows.