第四按顾客的产品开票日期为保修期起始日期;
北京https://media.nfnews.com/nfplus/ossfs/pic/xy/202405/21/5834414f-57ff-4d32-b46b-12550c26edad.jpg?x-oss-process=style/w640|https://media.nfnews.com/nfplus/ossfs/pic/xy/202405/21/8510336b-e0be-4502-9df3-0a53ddd36150.jpg?x-oss-process=style/w640|https://media.nfnews.com/nfplus/ossfs/pic/xy/202405/21/7d6e0780-cde9-441d-99df-379ed77c3822.jpg?x-oss-process=style/w640|https://media.nfnews.com/nfplus/ossfs/pic/xy/202405/21/ef429d13-f31e-48aa-b6a2-586e4de3c823.jpg?x-oss-process=style/w640