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 check valves. The models with ANSI/BHMA certificates come with delay action functionality as option and meet ADA requirements. We have also CE certified products oriented for European markets which were manufactured according to EN1154 standard. All of our door closer products are non-handed.
We have very close partnership with well known brands as their long term strategic supplier in China. During those years of partnership with our global partners, we’ve learned the importance of innovation and discipline. With Dorrenhaus, you get the opportunity to work with the most trusted brand in China.
Six complete production lines with annual output of 1.5 to 2.0 million sets.
Two complete door closer assembling lines, max. 12,000pcs per day.
Two automatic painting lines finish 8000 -10000pcs of door closer each day.
OEM/ODM
1. Manufacture door closer only, 1.5 to 2.0mils sets each year.
2. Long term and main supplier of world’s top brand.
3. UL and CE certification, passed life cycle test of 5 mil. cycles.
4. Passed European & China ISO9001:2015 QMS Certification.
5. Mainly for export market since foundation in August, 2011.
R&D
National New high-tech enterprise
UL certificate of Achievement
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Products
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