【什么是延长保管期？】
用户要求延长商品保管期限，需在商品入库低于180天才可操作延长，最长延长6个月。
【延长保管期的优势是什么？】
24小时内处理完成，以邮件和站内信的方式通知用户“已处理”。
【延长保管期需要什么？】
1、需要延长保管的商品编号（ID+数字）；
2、说明延长的月数（以月为单位，最多延长6个月）
What is Storage Period Extension
If the user requests to extend the storage period of the goods, it can be extended within 180 days after the goods are put into storage, and the longest extension is 6 months.
What are the advantages of extending the shelf life
The processing is completed within 24 hours, and the user is informed of "processed" by email and in station letter.
What does it take to extend the storage period
1. Commodity number (ID + number) to be kept for extended period;
2. State the number of months extended (in months, up to 6 months)