The 25th Aluminum Doors, Windows, and Curtain Wall Industry Expo was held at the Poly World Trade Center Exhibition Center in Guangzhou from March 4-6, 2019. Huixian Yiyuan Sealing Materials would like to thank all new and old customers and friends for their visit, support, and trust. All employees of Yiyuan Sealing Materials will do their best, with quality and reputation as the core, adhering to the principles of customer and sincere cooperation, and serving every customer well!