... . 1Place of Origin:Xiamen, P.R China2Brand Name:tcjh3Style:Spiral4Load Type:Compression5Min. order qty:10000 pcs6Port:Xiamen, P.R. China7Packing Methord ... ,Electro Painting,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G. ) etc.Heat TreatmentTempering,Hardening,Spheroidizing,Stress Relieving.StandardISO ...