... of intake & exhaust valve for Austin. 2.materials:intake:SHU1&SUH3,exhaust:SUH3a&SUH35 3.ISO9001 Intake valve and exhaust ... and exhaust valve is the main parts for Toyota,Niaasn, Mitsubishi, Honda, Suzuki, Daihatsu, Isuzu, Mazda, Buick, Peugeot, Daewoo, Kia, Renault, ... dealing in.2.The specification of intake & exhaust valve for AUSTIN.3.Four type of regular treatment as belowTuff trided/nitrided: ...