... Spring 2.Long Span 3.Reliable Quality 4.Five Year Warranty 5.SGS Test, ISO 9000 Certificate, OEM ... world by high quality and good service. 5 year warranty for the goods.TypeStroke for different kind of ... outer tube.Class 1---1.2mm, cheaper price, two year warranty(Normal)Class 2---1.5mm, cheaper price, three ... Class 4---2.5mm, more expensive price, five year warranty (Best)Trade TermFOB Shanghai or C&F ...