... for american customer to cooperate, we can produce for you under your brand, we also have 5 exprienced R&D person ... :1. seat width: full range available, 16", 18" for normal weight people, 20",22",24" for bariatrics2. chair frame: steel frame ... fatigue test, that is, it can work 160,000 times under weight-bearing of 250lbs and 450lbs. Series of this wheelchair Model ...