3) The appearance should be beautiful: there are generally four types of non-standard modeling phenomenon:
1, the surface is not smooth, the mechanism has cold mold imprint, blowing extrusion and air eye imprint, etc.
2. Observe the light of the drinking utencil, and you can see the marks and cracks that are the same as the knife marks, but different from the light refraction of the whole container.
3, the geometric shape is not straight, the circle is not round, the flat, the straight is not straight.
4. The cover cup on the pot is too loose or too tight on the neck of the pot, or too hanging to fall on the shoulder of the pot, and the same set of drinking utensils, pot, cup, plate and other shapes are not coordinated, the artistic style is not consistent. Glass products are not standard, not only affect the appearance, but also easy to damage.
