In July 4th, 2013, after 3 month of development and test, Huaqiang launched the roller system for UPVC & Aluminum windows and doors. Huaqiang roller system applied the best raw materials (Zamak #5, stainless steel 304, nylon, fiberglass etc.) and high quality bearings imported from Japan, to guarant

In July 4th, 2013, after 3 month of development and test, Huaqiang launched the roller system for UPVC & Aluminum windows and doors. Huaqiang roller system applied the best raw materials (Zamak #5, stainless steel 304, nylon, fiberglass etc.) and high quality bearings imported from Japan, to guarantee the best quality & performance of windows and doors. All Huaqiang's rollers can meet European standard cycle test of 25000 times(for window) and 100000 times (for doors).