Raw Material Quality Control-shakerbottle.com only purchase the material from big material companies, such as Eastman Chemical, SK chemicals, SINOPEC, which would issue food grade reports.
Production Quality Control-shakerbottle.com will need to compare with qualified samples to confirm that the appearance is consistent, also compare with color samples to confirm that the color is consistent.
Printing Quality Control-shakerbottle.com will check the color with color samples and Pantone color cards. Before printing, we will make 3-5 samples and do a dishwasher test.
Packaging Quality Control-shakerbottle.com, before bulk packaging, 10 samples need to be tested for water leakage. If there is no leakage, bulk packaging can be arranged.
Pre-Shipping Quality Control-shakerbottle.com will re-inspect 3% of the products, check the appearance and testing leaking, and check with the AQL standard. If the products are within the standard, they can be shipped. If not, they need to be reproduced.
