Shanghai Changbiao Hardware & Machinery Co., Ltd.Established in 2008, the company specializes in screw-assembled washersand offers integrated processing services for threaded sleeve washers, supporting precision manufacturing in fastening systems.Suzhou Changbiao Metal Products Co., Ltd.Founded in 2013, the company is committed to future-oriented innovation, actively expanding itsautomotive screw and washer projectsto meet evolving industry demands.Jiangsu Changbiao Automobile Parts Co., Ltd.Founded: 2019Facility Scale:·Total site area: 16,000+ m2·Factory floor space: 12,000+ m2·Total investment: RMB 300 millionAdvanced Manfacturing Capabilities:Automated optical sorting lines with manual quality control.

Flat washer,
Conical washer,
Wave spring washer,
Automotive eccentric bolt washer,
Nut cap flange washer,
Chamfer washer，
Self-Locking washer