Yes, you must have a valid sanjing3c account in order to buy an item at the sanjing3c site and use your coupon. During the process of buying an item on our site, you can use your sanjing3c account to see more of our services.

It depends! Normally, the percentage that you can save with that sanjing3c Coupon will be shown right on the page, so you can see if it is applied sitewide or not. However, once you are not sure, try it right on their's products you want to buy.

Shoppers can get coupons for their first purchase at the store. However, it is not all the time, sometimes, they cannot apply a discount on items selling out or items not contained in the promotion program. It depends on the time you shop at sanjing3c.

All deals from Promotion Programs of sanjing3c are collected here. For each certain occasion, its coupons will be on the top of the coupon list, and surely they always come with an expiry date.