https://u.jd.com/7sONt95
200-20补贴券
https://coupon.m.jd.com/coupons/show.action?key=c9m7c0sfo9a347989e873258bb
7折券
认养一头牛全脂纯牛奶250ml15盒加量装，加购3件
再凑单200-20补贴券，算下来折合20.63/件
https://u.jd.com/7iOxwbF