1.Certification:ISO9001 2.High cost performance 3.Using high quality steel and tungsten carbide tips 4.Can customize for you We can supply all kinds of RUIZUAN brand coal mining bits, sleeves and holders which have high strength, high wear resistance and long life features;Our product are widely used on excavation machines, shearers, coal mines, iron ores, aluminum ores, geotechnical engineering etc;We can design and produce different bits according to different hardness of rock to satisfy customer’s different requirements;We also can help our customers to design, produce and repair all kinds of cutter drums.

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