1.Hollow sheet line 2.PP extrusion line 3.hollow sheet production line Plastic PP hollow sheet (corrugated board) is an optimal product substituting papery corrugated board.It can be widely applied for automobile industry, electronic industry, hardware, foods and drinks, chemical plastics, chemical drugs, pesticides, textile clothing, instrument meters, advertising industry, and postal service industry.This is the best substitute of paper hollow grid plate. It uses widely in the fields, such as the car industry, electronics industry, hardware, food & beverage, chemical plastic, agrochemical, chemical, textile, instruments and meters, advertisement, post office and like. 1) transportation and packing containers or pads and sheets of above industry2) form lining board for suitcase or luggage.3)sign board, advisement board, fixture and frame during construction.4) anti-static or conductivity container for electronic industry.