Dorrenhaus is a Germany brand, and on October 10th, 2011, Dorrenhaus Germany's door closer production base in China was formally established. With a registered capital of USD 3000,000.00, floor space 18000m² and over 205 employees. We design and manufacture series door closer and floor spring professionally and exclusively, which are widely used in airport, hotel, station, hospital and other large-scale public facilities.
We have been passed the certification for ISO9001:2015 quality management system. Our testing center are fully equipped with facilities for testing the mechnical property, reliablility, lifetime, high-and-low temperature performance, antiseptic ability of door closer and floor spring,
Main international and domestic certification which our products passed includes:
1) BHMA/ANSI 156.4 Grade 1, life cycle test of 2 mil. cycles
2) UL228 and UL 10C for 3 hours fire testing
3) CE: EN115, life cycle test of 500,000 cycles.
4) CE: EN1634 fire testing
5) China compulsory product certification.
Dorrenhaus is a Germany brand, and on October 10th, 2011, Dorrenhaus Germany's door closer production base in China was formally established. With a registered capital of USD 3000,000.00, floor space 18000m² and over 205 employees. We design and manufacture series door closer and floor spring professionally and exclusively, which are widely used in airport, hotel, station, hospital and other large-scale public facilities.
We have been passed the certification for ISO9001:2015 quality management system. Our testing center are fully equipped with facilities for testing the mechnical property, reliablility, lifetime, high-and-low temperature performance, antiseptic ability of door closer and floor spring,
Main international and domestic certification which our products passed includes:
1) BHMA/ANSI 156.4 Grade 1, life cycle test of 2 mil. cycles
2) UL228 and UL 10C for 3 hours fire testing
3) CE: EN115, life cycle test of 500,000 cycles.
4) CE: EN1634 fire testing
5) China compulsory product certification.