QLC number refers to "unique identification code", which is a coding system used to uniquely identify items. QLC coding has a wide range of uses and can be applied to various fields such as logistics, warehousing, e-commerce, and retail.

By identifying items with QLC numbers, it is convenient to manage item information, trace and trace the source, greatly improving the efficiency and accuracy of logistics and production. At the same time, QLC coding can also be used to protect intellectual property rights and anti-counterfeiting. The QLC number consists of numbers and letters, and usually contains key information such as the production location, production time, and production batch of the item, allowing consumers to understand the source and quality of the product more conveniently and quickly.