We emphasize advancement and introduce new products into the market each year for energy recovery ventilator, Commercial Air Handling Unit , heat recuperative ventilation system , Ventilation system ,Holtop Industrial Air Conditioning System Solutions . At present, company name has more than 4000 kinds of products and gained good reputation and big shares on market domestic and overseas. The product will supply to all over the world, such as Europe, America, Australia,Russia , Houston ,Southampton , Liberia .The company has perfect management system and after-sales service system. We devote ourselves to building a pioneer in the filter industry. Our factory is willing to cooperate with different customers domestic and overseas to gain better and better future.