Pv20 panoramic sliding door has only 2cm visual surface, but it can open a single door up to 8 m2. After strict calculation, the maximum strength can be 5.5m, and the maximum weight of a single door can be 500kg; The product adopts special alloy slide rail, the material strength is 3 times of stainless steel, and adopts 24-34mm heat insulation strip, segmented pulley, sunken drainage channel and other configurations, with superior performance, reasonable stress and no rainwater entering the room.