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a) Minimum size: M12, 1/2"
b) Maxmum size: not limited
c) Dimensions according to clients' requirements
d) Especially good at big sizes
2) Standards: GB, DIN, ANSI
3) Grade: grade 4.8, grade 8.8, grade 2, grade 5
4) Surface treatment: plain, black, zinc plated, HDG, dichromate
During the past experiences, i think the advantages of us are timely delivery and high quality. Customers around the world, such as TOTO, SAL, MCM, Visimpex , are the great evidence.