1. About PP Hollow Grid Board Machine: This production line is used to produce the PP hollow grid sheet line. PP finished sheet width 1220-2100mm, thickness: 2-14mm. Main machines of the production line: Extruder: special venting type design, advanced PLC temperature control system to ensure that plastic sound and high-yield stability in plastics extrusion. Screen Changer: optional hydraulic quick changer device, so that the process of changing network quickly and efficiently; duplex and special sealing structure, and ensuring stability for network devices. Mould: mould made of high-quality alloy steel with high activity of the throttling device, so the distribution of material flow in the die pressure is uniform; the upper and lower lips of die is of differential regulation, ensures a uniform thickness from top to bottom. Vacuum forming stand: forming system with a fast heat exchange cooling system, and with vacuum system, an effective staggered, sequential distribution to