1.supper silicone raw material. 2. most hose are handmade. smooth, bright with long ... hoseCertificationISO/TS 16949Application ForTruck, Bus, Tuning-car, Racing car, Heavy Machine, Engineering. Vessel, Air Craft.Place of OriginQinghe, Hebei Province, ... is excellent resistance to UV, water, ozone and oxygen,OilPro-environment, / Anit-bad climate. high performance auto silicone elbow hose used for ...