Changzhou Changhong Xianglong Machinery Technology Co.,Ltd.is a specialized company engaged in the research and production of air sealing machine,starlike material handling equip- ment,rotary valve,and electrical air lock.It has been committed to the research and development of these products over the years.It has a complete of technical force and advanced testing method for the research and development,design and manufacturing,and is a factory with the most similar products and varieties in China.And it has the quality assurance system for the design,develop- ment,production and service.