Wollastonite acicular powder is the best material to make friction products rare. Special make wollastonite acicular structure instead of the expensive fiber raw materials, reduce the finished products, improve the economic benefit; Wollastonite unique physical and mechanical performance at the same time, greatly enhance the finished product of frictional resistance and heat resistance. Widely applicable to the lining, brake pads, clutch, plug, pulley, sand paper and so on.