... the opening angle of windows Wind Supporter, two-bar friction stay, frictin hinge, window hinge, door hinge, PWS ... , door handles, window hinge, door hinge, friction stay, wind supporter, espagnolette bolt, door bolt, PU Foam, glass glue, cleaner, Aluminum ... rail, brush seal, gasket seal, fasten bolts, pneumatic tools and so on. two bar friction , friction ...