Jinzhou Dongfeng Machinery Co., Ltd. building material machinery develops very quickly; the market share is nearly 20%. Gypsum board production line made by our company fill the national gap and got the national patent (the patent No.: ZL200620127318.7, ZL200620127316.8, ZL 200620127315.3,ZL200620127317.2, ZL200620127396.7). It is recommended by China Building Material Industry Association and has got the CE certificate. In the global market, more than 50 sets of gypsum board production lines are made, installed, commissioned by Jinzhou Dongfeng Machinery Co., Ltd. We are the leading company in China.