The problem is common but difficult to solve! First, my friend said that weighing is a control method. You can add this receiving process, at least this method is feasible (especially for a single main product, and vice versa). Second, the weighing is 100% for unpacking inspection, and the weighing is 5% for sampling inspection. Third, the supplier is required to ensure that the quantity and identification are accurate, the packaging is intact, and there can be no deterioration. (It is very important for the weighing process) Fourth, the most powerful thing is to formulate a stepped punishment system for suppliers, that is, to punish more mistakes, which is the root of solving the problem, otherwise any receiving method will be useless. Fifth, on the basis of the fourth, make up the questions unconditionally and immediately. (If suppliers can't run more, they must pay attention to it, which is also a radical cure. If you are a small company and can't afford to offend suppliers, then the above five items are nonsense. If you want to be accurate, look up the figures yourself.