... 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 500,000 cycles.2.material:aluminum ... we can set up business relation in the future. Concealed door closer,passed EN1154 test 500,000 cycles,suitable for timber or ...