Do enterprises need annual inspection after handling commodity bar codes? The person in charge of trademark registration in Nanchang said that commodity bar codes do not need annual inspection, but once every two years. If an enterprise fails to go through the formalities for renewal of the barcode within the time limit, it will be deemed as not continuing to use the barcode, and China Commodity Coding Center will cancel its manufacturer identification code. The manufacturer's identification code is valid for two years. The renewal upon expiration of the validity period shall be handled within three months after the expiration of the manufacturer's identification code, and the business license of enterprise as a legal person (business license of individual industrial and commercial households) shall be submitted, the original certificate shall be returned and the corresponding fees shall be paid.