We produce various types of coal mining bits including bushings for coal mining industry. Products meet the standard of MT/T247-2006. different grade of tungsten carbide tips for different coal mining conditions, from soft to hard and super hard, all our products can meet the requirement. EK brand coal mining bits features: size variability including the most widely used types such as U85, U47, U95 ect ; meet the industry standard. We enjoy good reputation among users.