Video JINSON HARDWARE CO.LTD. company introduction 門弓器安裝種類 JINSON滑軌式門弓器-推門面安裝 JINSON滑軌式門弓器-拉門面安裝 concealed door closer top jamb & parallel fixing parallel fixing 門弓器安裝解說 門弓器力道挑選解說 JINSON門弓器-速度調整 滑軌門弓器/guiding rail door closer 外止動門弓器功能說明/Hold Open Door Closer 門弓器標準安裝 / door closer standard installation JINSON獨家代理--Fingersafe防夾手-安裝說明範例(MK1B) JINSON獨家代理--Fingersafe防夾手-安裝說明範例(MK1B) JINSON獨家代理--Fingersafe防夾手-安裝說明範例(MK1C) JINSON獨家代理--Fingersafe防夾手-安裝說明範例(MK1A) JINSON獨家代理--Fingersafe防夾手-安裝說明範例(MK1C有門擋)