All import foodstuffs and beverages are subject to inspections by the China Entry-Exit Inspection and Quarantine Bureau (CIQ). Quarantine and Inspection in China can be complicated and challenging, so be prepared and do not underestimate the cost, documentation and time required. Accessing up-to-date information on quarantine and customs requirements such as labelling and packaging requirements, food standards and allowable ingredient listings can be challenging. 
All imported pre-packaged food must be labelled in both English and Chinese (simplified Chinese as used in mainland China) with the general standard for the labelling of pre-packaged food (GB7718-2004), the following is the example of minimum information to be listed: Other information maybe required depending on the specific product and it is advised that exporters check with specialist logistical companies or relevant departments prior to exporting products to China:
- Wine name and type (eg. dry red, semi-dry)
- Vintage year
- Grape variety
- Country and wine region
- List of ingredients (including raw ingredient and juice volume and any additives)
- Alcoholic strength
- Name and address of manufacture and local agent or distributor
- Production date, (or bottling date: YYYY.MM.DD), shelf life and guidance for storing
- Net weight and volume
- Code of national standard, or industrial standard, or enterprise standard for the product
- Quality grade
- Production license
As you wrote «Quarantine and Inspection in China can be complicated and challenging». It is important have some contacts or a partner in China to help you with all the documents, etc.
Good article
Nancy