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.... Conforms to international standards and "Leeb hardness tester specifications ZBN71010-1990" promulgated by the Ministry of Machinery Industry, "Metallic hardness test method GB/T 17394-1998" promulgated by...
.... Conforms to international standards and "Leeb hardness tester specifications ZBN71010-1990" promulgated by the Ministry of Machinery Industry, "Metallic hardness test method GB/T 17394-1998" promulgated by...
.... Conforms to international standards and "Leeb hardness tester specifications ZBN71010-1990" promulgated by the Ministry of Machinery Industry, "Metallic hardness test method GB/T 17394-1998" promulgated by...