What is the difference between hollow plastic formwork and solid PVC plastic formwork?

What is the difference between hollow plastic formwork and solid PVC plastic formwork?

Polypropylene hollow construction plastic formwork can be made from recycled PP plastic and calcium carbonate powder. Due to its non-absorbability and corrosion resistance, its service life is greatly improved and the number of cycles can reach about 50 times. And it can be recycled, broken and reused without causing waste. Compared with wooden construction formwork, the overall cost is…