... 2)Material: boron alloy, boron-copper alloy casting iron & Mixing with chrome, molybdenum, nickel etc. 3)Different Treatment: Phosphated, Nitrided, ... . 4)Develop the new items according to the sample or product draft. REMARK: (1) our engine parts compatible for japanese ... (5) we are factory, have 45 years produce experience, with advanced product technology and material, if you can offer sample we can ...