ASIMCO Shuanghuan Piston Ring obtains Chinese patent for invention
ASIMCO Shuanghuan Piston Ring Co., Ltd. (Yizheng), a subsidiary of ASIMCO Technologies, announced that its multilayer, multi-element composite hard PVD coating technology for piston rings has obtained a Chinese patent for invention. The technology uses multi-arc ion vacuum coating to form evaporated PVD layers on ste....
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