Qingdao Yujiaxin Industry And Trade Co., Ltd.

Establish and improve various technical standards: raw materials and auxiliary materials standards, process standards, semi-finished products

standards, finished products standards, packaging standards, inspection standards, etc.

Strict implementation of management standards: quality control personnel to identify raw materials and semi-finished products, sorting, eliminate

unqualified products, and decide whether to accept the product or the batch of products. Ensure that unqualified raw materials are not put into

production, unqualified semi-finished products are not transferred to the next process, unqualified products are not delivered.