Injection MoldingMolding and injection molding are two different processes, even though the same product can be made using either method. However, there are significant differences in both product quality and cost. The specific distinctions are as follows:

Injection Molding Process FeaturesInjection-molded products have higher initial investment costs due to the expensive mold prices. However, the final product prices are exceptionally low, and the market is highly transparent. These products are best suited for small-sized items, with massive monthly production volumes. The molds and products exhibit high precision, commonly used across various industries. Injection molding involves both injection and pressure, ensuring that every piece has a浇口断面 (gate section).

Rotomolding ProcessFeatureRotomolding products are large, involving the process of placing plastic pellets into a mold, heating it, and then continuously rolling the mold to allow the plastic to adhere to the inner wall and take shape. The molds are inexpensive, while the products are costly, mainly used for hollow, packaging, and oversized items. They boast significant shrinkage ratios and extremely low constants, among other advantages.

Here's the difference between rotational molding products and injection molding products. Hope it's helpful to you.