KOJO is one of the chinese leading manufacturers of industrial steel valves.Our valves are supplied for a broad range of applications in the power generation, chemical and petrochemical, oil and gas, pulp and paper,mining, and ship-building industries. We concentrate on one business;designing, manufacturing and marketing advanced technology steel valves in a broad range of types and sizes. Our products include various types of valves in different materials...More

Quality Control

KOJO always trying best to seek Zero defect. We perform quality control strickly in accordance with ISO9001 quality management system, every step, from material supply to shipment. We have the labrotary and kinds of test equipments.We can do the chemical analysis, mechnical test...More

Cretification

KOJO continuously strenghtens research and development, innovative techniques with strict quality control, in-process inspection procedures, to ensure excellent quality and high perfomance of every product, has obtained API 6d/602/607, TS, ISO certification