... Wind Supporter, two-bar friction stay, frictin hinge, window hinge, door hinge, PWS hinge, window hinge, door hinge, aluminum alloy hinge, zinc alloy hinge for UPVC/Aluminum ... house. We also produce window handles, door handles, window hinge, door hinge, friction stay, wind supporter, espagnolette bolt, door bolt ... gasket seal, fasten bolts, pneumatic tools and so on. two bar friction , friction hinges ...