Pharmaceutical Good Manufacturing Practice Regulations Article 29

Where raw materials, product containers or caps are tested and found to be in compliance with documented specifications, Chinese herbal medicine factories may approve them for use; where aforesaid items are not in compliance, they shall not be approved for use.Raw materials, product containers or caps that are approved for use shall be used in the order of approval. However, where aforesaid items have been stored for long periods, exposed to the air or high temperatures, or subjected to other detrimental conditions, retesting shall be carried out.Raw materials, product containers or caps that are not approved for use shall be labeled to this effect, and kept isolated prior to their proper disposal.