Four openings impeller, Sealing structure Based on more than 30 years of experiences, VSI6X Series Vertical Shaft Impact Crusher carrying many patents amazes the market greatly. This machine is possess of four openings impeller, special sealing structure and sealed cartridge bearing structure, which makes production convenient and efficient. Applications: metallic and non-metallic ore, building material, artificial sand making and every kind of metallurgical slag We have got the certificate of European Union CE certification, ISO international quality system certification, and SZUTEST certification. Henan Liming Heavy Industry Science and Technology Co. LTD which mainly manufacture large and medium-sized crushing and grinding equipment was founded in 1987. It is a modern joint-stock corporation with research, manufacturing and sales together. Liming Heavy Industry is China top mining equipment manufacturer.