| Zhonggong Group was founded in 1983 and covers an area of more than 240 , 000 square meters. Henan Tosta Machinery Co. , Ltd. is the subsidiary of Henan Zhonggong Group. As R&D oriented company , we have over 1 , 200 employees and more than 200 engineers. With 9 subsidiaries , Zhonggong group has developed into a large-scale equipment manufacturing enterprise integrating the research and development , design , manufacturing , sales , installation , commissio |