Founded in July 1983, CHUAN HONG PRECISION TOOL MFG. CO., LTD. has built its reputation as a trusted ring gauge manufacturer, reliable plug gauge manufacturer, and a supplier of premium thread cutting tools. With decades of experience in precision measurement and thread tooling, CHUAN HONG provides certified, inspection-backed products for industries that demand exceptional accuracy.
To guarantee consistent quality, we have invested in advanced inspection technologies such as German-made tool microscopes and universal length measuring gauges. Every ring gauge, plug gauge, and thread cutting tool is delivered with a certificate of inspection, assuring global customers of our manufacturing integrity.

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