• High-profile mining machine manufacturing brand

    Since 1987, CoJJ Group has continuously obtained more than 100 patents and authorizations for crushers and mills. The crusher and mill equipment developed by RJJ Group are exported to more than 160 countries and regions around the world. Recognition and trust.

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  • Service guarantee

    Our service commitment is not a slogan, an idea or an advertisement, and our service commitment is serious. To this end, we have built a large, systematic and standardized service guarantee system to ensure that each link is implemented in place and processed in detail.

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Hot Products

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HPC Cone Crusher

Base on the latest technology and decades of years’ producing experience, CoJJ designed the HPC series cone crusher.…

MTM Trapezium Grinder

MTM Medium Speed Trapezium grinder is a kind of leading-world-level industrial milling machinery. It is designed…

VSI Crusher

CoJJ VSI Series vertical shaft impact crusher is designed by reputed German expert of CoJJ and every index is in…