single chain

dual chain

curved flexible chain

600-2000 newton force

come with viarious brackets

Trend Technology was founded in 2001 by 3 young engineers who realized that window automation would be a big trend in the future world, so they named their company "TREND TECHNOLOGY". After more than 22 years, now trend is the top enterprise in window automation industry of China and exports to more than 50 countries...  

Trend Technology is specialized in developing, producing and selling automatic ventilation, smoke control system for both commercial and domestic using. The company has a group of senior engineers with strong mechanical and electrical R & D capability. The factory covers an area of 3,000 square meters...