Profile: Shanghai Hanwei Special Valve Manufacture Co., Ltd. specializes in the production of pressure valves. We offer metal seated butterfly, metal seated ball, high temperature double disc pneumatic gate, non-leakage welded ball, cryogenic, slide and angle valves. Our 24-way valve is used in simulating moving bed molecular sieve absorption separation units. Our products are used in oil, chemical, natural gas, environmental production, power stations and metallurgical industry. We are accredited with ISO 9001 certification.