You will need to use your Promo Codes at HIDevolution by following these steps: You need to log in to your existing account at hidevolution.com or create a new account of your own; then, to select a product, you can browse the hidevolution.com product page to select a product and add it to your cart. Occasionally, they will offer you discounted products up to 70%. Then, click Pay, select the corresponding available Coupons, and select your preferred payment method. Please note that each HIDevolution Coupon Codes has its own rules of use, if your order is eligible for hidevolution.com, it can be used.