Its process: cleaning the barrel-checking the packaging of the decoction pieces to check the product name, batch number, production date and expiration date-checking the quality of the decoction pieces-filling the barrel-recording-rechecking-signing.

I looked for a lot of information, but I didn't find any relevant content. The above is what I have summed up based on years of work experience, and whether it is correct or not needs to be confirmed.