9.23.76718 Manual Middle Welder for Welding PVC doors and windows. 1. Without Pneumatic energy2. Simple operation, ... , window lock, door locks, window bolt, door bolts, PU Foam, glass glue, cleaner, Aluminum rail, brush seal, gasket seal, fasten bolts ... tool, welder, etc. 9.23.76718 Manual Middle Welder for Welding PVC doors and windows