Diesel piston for automobile,auto parts Alfin ring, steel sheet, cooling channel,profile skirt.Graphite ... for automobiles,auto parts We have supplied products for pistons as follows:FAW,Cummins,Sinotruck,Deutz,Steyr,Benz,Man series and so ... ,hardening anodic oxidation in top etc...Stery and Cummins B series pistons are confirmed as well-konwn brand products of the ...