... Germany hardware 3.Simple structure and easy installation 4.Laminated glass,good sealing Aluminum frameless bi folding door:1.Material: ... anti-corrosion function. 6.Glass:single glass,double glazing glass,laminated glass,Low-E glass,etc. We will design the suitable glass according to the window ... door,you can see the hinge,handle,hardware and the glass. All the hardware we use is Germany origin. So ...