... within 150mm4Head diametre rangethe largest is 35mm5Surface treatmentZinc,Nickle,Passivated,Tin-plated,Sandblast &Anodize,Chromate,6Heat treatmentsoft, case harden, ... and have more prefessional technical staff for design and quality control.4. Workshop Show:We have advanced equipment ... examinationto the product, leaves the plant the product quality domestically first-class.7. Product Packaging: If the ...