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Ruian Jingrui Fastener Co., Ltd.
瑞安市晶锐紧固件有限公司
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(DIN 137 (B) - 1987)
主打
material
High-carbon steel
Coating
black oxide coating
材质:65Mn、不锈钢,规格范围:M3-M30,表面处理:发黑、磷化、镀锌、达克罗、本色、久美特
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GB /T 955 - 1987
DIN 137 (B) - 1994
DIN 6904 - 1990
DIN 137 (A) - 1987
Q 416
CNS 4406 - 1979
YJT 6002
QC /T 363 - 1999