Zhejiang Dorrenhaus Hardware Industrial Co., Ltd.

Founded on Oct. 10th, 2011, all members of management have more than 15 years experience in door closer industry.

Registered Capital: RMB 20mils. (equal to USD 3mils. )

Main Products: Hydraulic door closer

Number of Employee:205, in which 7 for R&D, 13 for quality control
Floor Space: 12500 M2

Now have 6 complete production lines with annual output of 1.2 mils sets.
Exported to more than 20 countries in North America, EU and South-east Asia.

Pass certification for ISO9001:2015 quality management system in 2012 and ISO14001:2015 environmental management system in 2019.

Main international standard or certification which our products passed:
1) BHMA/ANSI 156.4 Grade 1, life cycle test of 2 mil. cycles
2) American UL 10C for 3 hours fire testing
3) European Standard CE: EN1154, life cycle test of 500,000 cycles
4) CE: EN1634 fire testing
5) China compulsory product certification.