... , Strictly and perfect management. On-time Delivery. Stainless steel water hoses with Brass nut, Plumbing hoses,SS hoses,1. Flexible hose 2 ... steel wavy hose.3. Size: F1/2" X F1/2", F3/4" X F3/4". High Quality,Advantage:1) Fast Material ... a six-step QC process before delivery.Material Control, Machining Quality Control, In-coming Material Inspection, Assembly Line Quality Control, Leakage Testing ...