The main chain contains a large number of free carboxyl groups, which will be combined with the amide bond in urea, etc., to fix urea around the polypeptide to achieve a slow-release and synergistic effect.
This machine made surgeon cap keeps your hair from falling out and keeps it clean. The product is Lightweight,easy to carry and keep,also breathable and comfortable.
Item No: HL-003 ANSI Class2/EN20471 Black Reflective VestColor: BlackMaterial: 100% polyester 120g knitted fabricReflective tape: 2" wide reflective stripes are double-needle stitched onto 4" wide contrasting color stripes on front and back of vest for ma