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.brbrMain Products> Hydraulic door closerbrbrNow have 6 complete production lines with annual output of 1.2 mils sets.>brExported to more than 20 countries in North America> EU and South-east Asia. br BHMAANSI 156.4 Grade 1 life cycle test of 2 mil. cycles ,br2> American UL 10C for 3 hours fire testing br<3 European Standard CE) EN1154 life cycle test of 500,000 cycles br<4 CE) EN1634 fire testing br<5 China compulsory product certification.