PP hollow board is the raw material of polypropylene. The raw material determines its non-toxic, pollution-free, corrosion-resistant, waterproof, shockproof, moisture-proof and recyclable performance. PP board is hollow board. Hollow boards are mainly used in electronics, packaging, machinery, light industry, postal, food, medicine, pesticides, household appliances, advertising, decoration, cultural supplies, photomagnetic technology, bioengineering, medicine and health and other industries. It is a new type of environmental protection packaging material.