... Concealed door closer,passed EN1154 test 500,000 cycles,suitable for timber or metal door 2.Using condition:-45~80degree. Concealed door ... closer,passed EN1154 test 500,000 cycles,suitable for timber or metal door Description1.Concealed door closer,passed EN1154 test ... can set up business relation in the future. Concealed door closer,passed EN1154 test 500,000 cycles,suitable for timber or metal ...