calcified coke Is by the degree of hardness low porosity high high quality refinery coke the pellet which is made after the high temperature roasting, available eac
PPTA fiber Fragrant black silk ribbon long textile fiber raw material introduces which from US Du Pont Company, uses the special craft to process Cheng Rongzhua
Wood Fiber For the natural fiber, uses the high-grade natural lumber, after project screening, the fission, the high-temperature treatment, chemistry processing
flake aluminum powder Uses the purity high ripe aluminum to become for the processing of raw material, available in each kind of friction material, gets up the stable fric
Copper fiber Is uses the high quality red copper to pass through the special craft for raw material to process the orange specially the indefinite form textile fi
brass wire
