1) Wide range of M12-M120, 1/2"-4", which are in accordance with the following
standards: GB/T, SH, HG, H, JB, GD, ANSI (ASTM/ASME), DIN and other non-
2) The products are specifically targeted toward the oil, petrochemical, chemical,
electric power (nuclear power station), machine and military industry enduring strict
precision, high strength, and strong rust in harsh environments
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