... There are four different shapes of hook type Injection hook,Plastic hook,Velcro Hook1). Factory direct sales ... passed ROHS which detected by SGS.6). Strong adhesive can stick to many surface: glass, wood, paper ... , etc.7). Adhesive reaches maximum strength after 24 hours.8). Make ... Sphygmomanometer), curtain, outdoor gear, handbag etc. Self-adhesive injection velcro hooks