... ,high efficiency,low noise etc ENGINE PISTON FOR HEAVY-DUTY TURCKSOur company was built in 1958 and situated ... it has already pass ISO9002quality system certification,QS9002quality system certification,ISO/TS16949:2002 quality system certification.Our product “Yinyun”brand ... ”.The products are widely used on the autombile,heavy-duty truck,electric generating set,boats,agriculture machinery,transport ...