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We are the manufacturer on production nuts for more than 35 years, and we have many experience on production :
national standard ( GB ), American standard ( ANSI ), German Standard ( DIN ), Italian Standard( UNI ), Japanese standard (JIS ), International Standard ( ISO ) and other special nuts, Wheel bolts and non - standard special fasteners.
Certificated with ISO-9001/2015 and GB/T 19001-2016, and SGS certificate test.