Heat treatment technology is an important means to obtain good properties of various metal materials.In many practical applications, reasonable selection of materials and various forming processes can not meet the mechanical properties...

According to incomplete statistics, the number of enterprises lacking smelting workers, molding workers, engineers,quality control and management personnel in China's foundry industry is about 58%, 20%, 50%, 34%...

ISO 9001 quality system certification, ISO 14001 environmental management system certification, OHSAS 18000 occupational health and safety management system certification, eu CE certification, pressure vessel PED directive, API certification...

Shanghai quality inspection institute hosted a seminar on valve flow resistance index and energy efficiency evaluation standard

The announcement of the state administration of market supervision on the requirement that explosion-proof electrical products should be changed from production license to compulsory product certification management

Principle of ultraviolet aging test box and matters needing attention

Yongjia county convened the valve industry international market development symposium