... treatment: carbonitriding, White zinc plated, Yellow, Black or others. 5) Package: polywood case,pallet or other special packageour own professional team ... treatmentgalcanizationanodizingsand blastingdull polishPHOSPHATIZINGPOM and otherspackingPoly bags, bubble pack, blister card, vacuum forming, paper box and othersMoq100~1000 piecesadvantagesHigh quality control and Competitive ...