[China Aluminum Industry Network] Check whether the product's usage function is reliable and flexible. Two or more products should be selected for cross-checking. In particular, when buying a two-way lock product, the internal and external locks must be tested and opened with all keys. . Also check the insurance organization of the product. It is recommended to try each lock at least three times.
1. Should choose products with high reputation, stable quality and good after-sales service.
2. First, check whether the marks and signs of the purchased product packaging are complete (including the product's implementation standards, grades, manufacturer's name, address, and production date). Whether the packaging is firm or not, the content of the manual is consistent with the product, beware of exaggeration and The fact is inconsistent.
3. Observe the appearance quality of the product, including whether the lock head, lock body, lock tongue, handle and cover plate components and related accessories are complete, and whether the surface color of the plating parts and paint spray parts is bright and uniform and there are signs of rust and oxidation. And broken.
4. Check whether the product's use function is reliable and flexible. Choose two or more products to be checked and compared. In particular, when buying a two-way lock product, you must use all the keys to test the internal and external locks respectively. Also check the insurance organization of the product. It is recommended to try each lock at least three times.
5. Then check the key's dentine condition. If there are five spoons, each key should have no less than three different spoons. At the same time, the deeper spoons should not be selected for the front teeth and the fifth tooth. The key is inserted and unbreakable.
Zhejiang Nanhua Electronic Technology Co., Ltd , https://www.nhloadcells.com