1.New generation metal core braking syste
2.Gear deceleration ratio 1:4 and 1:9 can be choosed.
3.The low stop of the winder ensures the one-way work,and the high-precision linear winder ensures a line of lifting,the special leaf-driving structure,ensuring that the system is smooth and stable and a good airtignt.
4.The new type metal core brake system and one-way used winder can be estended to automatic descent system.
5.4.5*6 loop chain and 5mm loop cord is available.
6.The no-load tension is less than 0.5kg ,max weight is 15kg,and the rising tension is less than 4kg,which make the labor-saving to 80%.