... / fabric loop and injection hook fastenerBack to Back Velcro is a high quality velcro. One side is hook, the other is loop ... ' own design.1)Material:mainly nylon2)This velcro is widely used in plastic, raincoat, stationery, leather products,etc.3)Any ... passed SGS. We use enviromental protection raw material to dye, which conform to the European enviromental protection standards. Our company enjoys good ...