Wuhan Han Wei Li Yuen-being of Equipment Co., Ltd. is a professional constant pressure water equipment, air valve, fans, diffusers, vent, muffler static box production and marketing in one of the science and technology enterprises. Double Grille Applications: This product is usually installed on a pipe or spacers for double-side outlet Grille has two adjustable angle of moving blades, short blades for adjusting the airflow of the divergence angle of the outlet network. It can also be used to change the direction of airflow; long blade can be adjusted for airflow attached to the ceiling or pour a certain angle (when the fan heater) or a single outer blade Grille double blade Grille's. may be parallel to the long side of the outlet strip to be parallel to the short side, it can be chosen according to the requirements of customers. The utility model relates to a central air-conditioning vent Grille cotton, including the frame, blade, connecting shaft, wherein : There are several in the frame shaft hole, the shaft connecting shaft bore has ribs in the axial hole of the inner surface of the frame, there is a groove in the outer surface of the shaft hole of the frame, the ear of the connecting shaft located groove. The utility model has the advantage of good vane stability, flexible rotation, no noise at work. Air strips, Wuhan Han Wei Li Yuen (certified), provided by the Wuhan-Macau air heating Equipment Co., Ltd. Li Yuen Wai. Wuhan Han Wei Li Yuen-being of Equipment Co., Ltd. (www.whhwly.com) is a leader in Wuhan, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. In Wuhan Han Wei Li Yuen leadership with the staff warmly welcome all inquiries negotiations to create Wuhan Han Wei Li Yuen better future.