Zhejiang Dorrenhaus Hardware Industrial Co., Ltd

Dorrenhaus is an expert in production of UL and CE certified door closer which stands for the highest standard you could find in China or even globally. Every single piece of our product is only released in the market after the most strict inspections starting from raw material to packaging details. Our ANSI/BHMA grade products are the most popular in the North America markets including mainly the USA and Canada.
Most of our door closer products are rack and pinion mechanism in iron cast or aluminum controlled by independent sweep, latch speed and back ... [Detail]