Heshuanglock is the retail brand of Dongguan Heshuang E-commerce Co., Ltd. Our production base in Zhongshan covers 18,000 m², employs more than 180 skilled workers and runs 3 assembly lines that build over 3,000 locks a day. Because we make the locks ourselves, we also test them ourselves.
Cycle life testing
Locks run on automated rigs that lock and unlock them again and again, to confirm the handle, motor and latch keep working long after normal daily use.
Salt spray testing
Front doors face humid and coastal air. Salt spray tests check that the surface finish resists corrosion, which matters in Gulf coastal cities.
Waterproof testing
The outer panel is sprayed with water to confirm it handles rain and regular cleaning.
Final inspection
Before packing, every lock is checked for appearance, functions, accessories and packaging. Only then does it go into its box with 2 mechanical keys and fittings.