① Belt Drive, Big airflow ② Wall-Mounting fan , easy installation and maintenance ③ Hot-dip galvanized plate adopt 275g/㎡ galvanized layer, not rust. ④ Complete CNC production line, the accuracy of assembling holes is 100%, easy to assemble, quality assured. ⑤ 95% of the parts are produced by ourselves, reducing the cost of processing ,sharing profits with customers, ensuring quality , utmost cost-effective globally