We produce crusehrs & wear parts.And help build the world.Duoling is engaged in R&D, manufacturing, and sales of mining machinery since 1985. The company produces CRUSHIGN&SCREENING machines, i.e. jaw crushers, HYDRAULIC CONE CRUSHER, impact crushers, sand making machine, feeders, screens, belt conveyor and sand washer, etc. and casting foundry in Zhejiang for over 30years, productive output 6,000 tons annual, with products in high manganese and high chrome, like cone crusher liners-mantle and concave, impact crusher liners-blow bar, impact liners, jaw plates etc.Products sold worldwide. We sincerely welcome you to figure out wether we are helpful with your business.