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OFFICIAL ANNOUNCE2021.05.11
John Chen Screw【ISO 9001:2015】certification update
We updated our ISO 9001:2015 certification on 5/6/2021.
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PRODUCT2020.11.17
TURNING, MILLING TOOLING INSERT FASTENER
JOHN TEK 550 SCREWS SERVICE LIFE IS 6 TIMES LONGER THAN NORMAL SCREWS
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