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Ningbo Economic & Technical Development Zone Yonggang Fasteners Co., Ltd.
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IFI ANSI ASME
JIS
SP
APP
Hex Bolts
ASME B18.2.1 1996
Hex Cap Screws
ASME B18.2.1 1996
Heavy Hex Screws
ASME B18.2.1 1996
Heavy Hex Bolts
ASME B18.2.1 1996