To use the Weihao.tech coupons on their website, you need to meet the conditions:

•  The items you choose must meet all coupon requirements as explained in the Terms and Conditions.

• The coupon has not expired. 

• The seller uses the Weihao.tech checkout system or a customized checkout system that accepts the coupon.

Of course not, most coupons may be used only by you when you received them directly from Weihao.tech. As the Weihao.tech coupon includes your User ID, it cannot be resold or transferred in any way.

To avoid this problem, you should check out carefully Weihao.tech promo code before that promo code could be expired, some promo codes are tied to a minimum purchase, a first-time purchase, or tied to geography, and other reasons.

Normally, most of the websites you can print the grocery coupons from only work on a computer, even you can get coupon books mailed to your home for free. But it completely depends on Weihao.tech's support program at the time you search, so please visit the Weihao.tech site to know more details.