Dorrenhaus came into being in 1872 in Germany. It is a high-class Germany based gating hardware manufacturer. Soon after gaining popularity in Germany, it was established in China’s market where it was welcomed with open arms. Dorrenhaus supplied countless industries with their standard quality products.
10th October of 2011 marked a landmark for Dorrenhaus when their door closer manufacturing industry by the name of Zhejiang Dorrenhaus Hardware Industrial Co. Ltd. opened its door formally. Our team is highly skilled and trained while our management team is sufficiently experienced in hydraulic door closer industry. Dorrenhaus is having a registered capital of about 20 Million RMB which is equal to US Dollars 3 Million.
We are famous for Automatic door closer, Hydraulic door closer, Heavy duty door closer, Fire rated door closer, Concealed door closer, CE certificated door closer, American style commercial door closer, Door closer parts and UL Listed door closer.
Our Amazing team: Our team consists of highly trained and skilled professionals. We believe in quality, therefore we have a team which is the epitome of quality skills and knowledge. Our team currently is of above 205 individuals. Our Research and development (R&D) team have 7 experienced professionals. Our Quality Assurance team plays the most important role in the manufacturing process. We have 13 amazing resources who make sure that each and every product we put out is in excellent quality.
Production Area: Our production floor is well equipped with all the necessities and is abiding by international laws. It has an area of 12500 sq. meters. Our annual output of hydraulic door closers has surpassed from 1.2 to 1.5 Million sets. Our products are being sold in over 20 countries including America, Middle East, Europe, and South Africa and counting. It passed the quality management system certification for EN ISO9001:2008 in 2014.
Other than that we have many domestic and international certificates which confirm the excellent material and quality of our products:
1）ANSI 156.4 Grade 1, American National Standard life cycle test of 2 mils. Cycles
2）UL228 & UL 10C, American, for 3 hours fire testing
3）CE: EN1154, European Standard life cycle test of 500,000 cycles
4）CE: EN1634, European Standard fire testing
5）QB/T 2698-2005 China National Standard: Grade 1, life cycle test of 1 mil. Cycles
6）Fire rated door closer Certification of China Compulsory Product