With basically examines equipment (Vernier caliper, inside diameter micrometer calipers, thickness counts) to check size, inspection outward appearance.

Vernier caliper
Vernier caliper
Inside diameter micrometer calipers
Thickness counts
High divider
Photosource magnifying glass
Tooth gauge
R gauge
International general PANTONE color card
European general RAL color card
The examines the equipment
The examines the equipment
sample room
experimental mold
experimental mold

After the mold experimental mold, the sample (T1, T2, T3…) retain for 2 years, the limit sample will permanent preservation until no longer produces up.