| Composite multi - layer bearing- Sliding surface : specially sintered materials -HRB70- Back steel : heat treatment - HRC 25- Impregnation Oil : Min 12 Vol%* Completed solved cam & tappet field claim problem- Excellent bonding strength- Competitive price and quality of rigid tappet- Excellent pitting and scuffing property compared to chill tappet & sintering* Requirement for WC Tappet- Marketing requirements for High power, High Fuel Efficient- Requirements of High power, High Fuel Efficient for 4 valve.- (To reinforce the Environment Pollution Regulation.- Reinforce of environment regulation for Euro-lll | 
