TONELUCK (Shenzhen Greater Electronics Co., Ltd. Switch Company) is part of the CK Group, established in Hong Kong in 1976. The group has developed into a company with more than 3,000 employees and many registered subsidiaries at home and abroad.
Who We Are
We design, manufacture and sell electronic components, electrical switches and OEM parts for many world-famous companies in the home appliance, automotive and industrial industries. From a single micro switch to a complete OEM assembly, our engineers work as an extension of your own team.


Our Strength
- Over 50 years of switch R&D and manufacturing experience since 1976
- More than 3,000 group employees and subsidiaries worldwide
- One-stop in-house manufacturing: mold design, plastic injection, metal stamping, electroplating, assembly and QC
- Products certified to UL, cUL, ENEC, CQC and CE, and compliant with RoHS and Reach
- Testing performed according to EN 61058-1 (VDE 0630)




Quality You Can Verify
Every product family is tested in our own laboratory and our quality system is audited to international standards. Certificates for UL, cUL, ENEC, CQC and CE are available on request, together with RoHS and Reach declarations.