... 100% recycled GPPS accepted 3. Foam agent :CO2/Freon/Butane/LPG... XPS foam board production line(CO2/HCFC/HFC/BUTANE ... /LPG.... Basic Configuration1. Mixing and Feeding System2. Primary Extruder (¢120 ... tile, refrigeration storehouse, highway, airport, the ventilation piping of central air conditioner…..The more application, the bigger market. What is ...