------------ Our Advantages ------------
1. Only produce door closer, annual output 1.5-2.0mils pcs.
2. UL & CE certification, max. Life cycle test of 5 mil. Cycles.
3. Pass European & China ISO9001:2015 QMS Certification.
4. Mainly for export market since foundation in October, 2011.
5. Long term cooperative supplier of world’s top security brands:
A High-end Germany Gating Hardware Brand
Originally founded in 1872, Dorrenhaus is a high-end Germany gating hardware brand. At the beginning of 1980's,
Dorrenhaus entered into Chinese market, and supplied numerous households in China with high quality hardware products. On October 10, 2011, Dorrenhaus's door closer manufacturing base in China - Zhejiang Dorrenhaus Hardware Industry Co.
Ltd was formally founded. All members of management team have more than 15 years of experience in door closer industry. Marketing Under Dorrenhaus and DORHAUS Brand
In 2017, our new trademark - DORHAUS was registered. We have $3 million registered capital. Our main products include
hydraulic door closers, automatic door closers, concealed door closers, commercial door closers, fire door closers, auto door
closers, sliding door closers, heavy duty door closers, overhead door closers, UL-listed door closers and door closer parts. We have 205 total number of employees, which includes seven R&D staff and 13 quality control staff in our
15,000-square-meter factory. Exporting Products Worldwide
Now, we have six complete production lines with annual output of 1.5 to 2.0 million sets. We export our products to more than
20 countries in North America, Europe, Russia, the Middle East and Southeast Asia. We passed the certification for EN ISO
9001:2008 quality management system in 2014, and ISO9001:2015 in 2017 respectively. Our products passed many international and domestic certification and standard, such as:
American National Standard: ANSI 156.4 Grade 1, life cycle test of 2mil cycles
American UL228 and UL 10C for 3 hours fire testing
European Standard CE: EN1154, life cycle test of 500,000 cycles
European Standard CE: EN1634 fire testing
China National Standard: QB/T 2698-2005 Grade 1, life cycle test of 1 mil. cycles
China Compulsory Product Certification for fire rated door closer
Cooperate with Us Today
For more detailed information regarding our business, contact us today.
Quite satisfied with closer quality, function and features, appearance, packing, timely delivery, easy communication, quick and efficiently handling of complaints. Lower price, more customer. -- Gallery Specialty Hardware Canada
Satisfied with most aspects of Dorrenhaus, the quality of D303, D4016, D30 and D2024 are very good, our customer quite satisfied with these models. -- Guangdong Topstrong Hardware