... specializes in producing and exporting various kinds coal cutters, coal picks, coal cutter picks, coal bits, coal drill bits. They are widely used on ... Wirtgen system and Kennametal systems.2.They are used for road milling,ground stabilizing,cutting asphalt and road,etc ... coal wining machine,roadheader,etc.;6.various design can be applied to all of your cutting condations cutter teeth for coal mining ...