Products include: anti-error corner device, lock block, transmission fork seat, inward tilt support rod, anti-drop device, lifting block, Inward tilt support block, upper and bottom friction hinge, inward open handle.

Product function: Realize the two opening modes of the window sash, which are casement open and hanging,which are convenient for ventilation, cleaning, easy installation, smooth opening, and better load-bearing,which improves the sealing effect of the window sash and raises the energy-saving K value requirement.