NANDA LU 219 NONG 32#, BAOSHAN District
+86 (21) 63636994
swelling screw; swelling bolt; gecko; punched products processing; metal tube gecko; gecko; sleeve hit anchors; wedge anchors; inner urgent anchor; snail; screw; hexangular screw; wooden screws; galvanized strip steel; gecko; stamping process; DIN571; nyl