Chengdu, CN
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Patent Grant
Chengdu Seamless Steel Tupe Plant
Qin B. Chen
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Patent Application
CHENGDU HOLY AVIATION SCIENCE TECHNOLOGY CO., LTD.
Xiaofeng ZHANG
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
