Zhengzhou Sanzan machinery Co.,ltd .is a joint stock corporation interating the research,manufacture sale with the target at the large and medium sized series of heavy equipments for mine machinery ,wall materies,formed coal ,metallurgy and etc.We sell products mainly include Jaw crusher, ball mill, rotary dryer and other heavy equipment.The company is located at zhengzhou national high-tech development zone.http://www.crushing-mills.com/