Commodity code and commodity bar code are two different concepts. Commodity code is the numerical information that represents the commodity, while commodity bar code is the symbol that represents this information. In commodity barcode work, to produce a commodity barcode symbol, you must first program a numeric code for the commodity.
Common commodity code:
1, LOT: production lot number. It is the same batch of goods **** have a serial number. In general, according to the lot number can track the production of the product (production date, quality level, factory time, etc.). If you find a problem with the product, you can check the other products in the same batch for problems based on the batch number.
2, SN: SerialNumber, product serial number, that is, the goods number.
3, cas: ChemicalAbstractsService, the American Chemical Society under the organization Chemical Abstracts Service registration number.