D300 DOOR CLOSER
https://www.dorrenhaus.com/Product-Details.html?_l=zh_CN&product_id=106-
Product Category
Fire-Proofing Windows and Doors
Power Size:3# & 4#
Door Weight:40-65KG &60-85KG
Door Width:900-1000mm & 1000-1100mm
Economical Model Door Closer
Hold Open Function Optional