Hollow material refers to the material that can be used for hollow molding, such as plastic buckets.

The melting finger of the large hollow material is below 0.2, and it can also be relaxed to 0.5, and the strength is above 30

The product volume is generally more than 100L. Due to the large volume of the product, the material is required to have high strength and good toughness

All data should be up to standard. Large hollow material can also be made into small volume products, but because of the high cost

Very few people do.

The melting finger of small hollow material is 1-2, the strength is about 20, and the products made are generally below 20L

More than 50L generally can not use small hollow material.

Due to the small volume of the product, the material requirements are not so strict as large hollow, high strength and good toughness

All data can meet the product standard. In principle, small hollow material can not be made more than 50L volume products

However, because of the low cost, a small number of people do low-quality products, shoddy.

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