The warranty provides a lot of information, such as the manufacturing unit of the product, ordering unit, ordering standard and brand number, volume number, bundle number, heat number, specification, weight, two-dimensional code anti-counterfeiting information, product form, certificate number, contract number, material performance, chemical composition, remarks and quality director, etc.

 

1、 Manufacturing unit

 

There is a column of manufacturing plants in the above quality guarantee letter. The manufacturing factory says the headquarters. For Baosteel, the headquarters refers to the headquarters compound of Baosteel. In fact, for different steel mills, there are different steel manufacturing units. For example, Nippon Steel has four steel manufacturing units, junjin branch, Bafan branch, Dazheng branch and Nagoya iron making plant. Each branch is good at making different things Take Bafan iron making plant as an example. The level of ironmaking is high, so all products with strict requirements on composition are manufactured in Bafan iron making plant.

 

Taking Baosteel as an example, Baosteel has a joint-stock headquarters, Meisteel, Bayi Iron and steel, and Zhanjiang iron and steel. The product positioning of each steel unit is different Baosteel Co., Ltd. is a large production base of high-quality automobile steel in China. Therefore, it can be preliminarily judged whether the products are the products that this steel unit is good at. For example, Meisteel's aluminum and zinc plated color coated plate and acid pickling plate are all good. According to the characteristics of different steel manufacturing units, to select the products with high cost performance, the information provided by manufacturing units is also very limited.