Due to the nature of the factory, heavy materials, cars, and other heavy things often entered and came out of the factory, so the folding door lower rail of the new plant was carried out with a car center-type lower rail that endured heavy weight. Unlike the regular lower rail, the wing-type design reduces the impact of the lower rail on the passage, and allows smooth driving without any inconvenience due to the lack of a jaw during the passage.

The construction was done with insulation frames according to the exterior installed with a total of 6 pairs of doors and black colors that are strong against living pollution. To make it easier to open and close the vehicle at once, the split drive and glass are constructed with basic 16T transparent double-layer glass.

Double-layered glass is a combination of 2 sheet glass for insulation and condensation prevention, with 16T double-layered glass used by the S&P folding door, with 5 to 25mm designation, glass types are single, double-layered, reinforced, insulating film, and glass transparent, blue-white.