1. Main materials and classification of smoke-blocking curtains:  The smoke-blocking vertical wall is made of non-combustible material as a smoke-proof partition for the smoke-proof partition, and the fire resistance limit is not less than 0.5h. It is installed vertically under the roof, beam or sus

Dear clients,We are happy to welcome Chinese Lunar New Year, and our factory is in holiday until 2/10.Wish you in the new year:

There are 600kg, 800kg, 1000kg, 1500kg, 2000kg motors for fireproof rolling door motors according to different lifting forces. Let's calculate the weight of fireproof rolling shutters. Generally, a square meter of steel fireproof rolling shutters weighs about 10kg. Generally, the lifting force o