Self Closing Valve Our History Jiangyin Marine Valves Co., Ltd. was established in 1989. It has specialized in designning and manufacturing valves since 1992 and obtained the marine valves then starts to sell valves to all over the world. The company obtained ISO9001 Certification in 2000 and won the accreditation of DNV-GL in 2020. Our Factory Jiangyin Marine Valves Co., Ltd covers an area of...