Whilst regulations governing Chinese foods appear to be both simple and close to those of the UK they are, in fact, very different. These differences may not be immediately apparent, but can result in a product being refused entry to China, or the import being held while the matters are resolved, or even blacklisted for the future. Normally, if a batch of product is rejected, the same batch cannot be re-submitted.
The most common pitfalls are:
China does not use either the E-number or Codex systems for additives; some additives have different functions; some are not allowed.
Some additives commonly used in the west are regarded as having health properties and must be registered under the Chinese pharmaceutical regulations – a process which is slow, expensive and difficult for foreign companies.