... , RoHS certified product 5, factory to port is 290km Small NBR/PVC tube (follow picture is 4.3mm inner diameter by 3mm wall ... resistance 5, oil resistance6, acid resistance7,alkali resistance8, working temperature is -40~110degree, 9, Tube Insulation Technology DateStandard: GB/T 17794 ... any time. my skype: cnguanjia facebook: www.facebook.com/cnjenny small size insulation tube factory (manufacturer)