What kind of PP material is used for injection molding daily necessities such as buckets, basins and chairs? 
supplementary question:
How to distinguish?

No best answer

For injection molding polypropylene, select high fluidity, medium fluidity, or low fluidity according to product size, mold complexity, or wall thickness. The toughness of low-fluidity materials is generally good. The higher the material, the toughness will decrease. Food box, use food grade. To make a chair washbasin, pure materials are rarely used, and a little mineral filler is added to increase the strength and shrink the size.