ENGWE, As a professional electric bicycle company, we continue to optimize our electric bicycles and develop new products. Our aim is to make high-quality and cost-effective electric bicycles so that more and more people can join in healthy life. Our main shipping country is the United States + Europe, and we have our own warehouses in the United States and Europe (Poland) In our website https://engwe-bikes.com/, we have promotions from time to time and offer 10%-20% discounts. For our affiliate: -Our sale commission 3%? -Our tracking gap is 30 days,In other words,when a buyer returns to our site within the Tracking Gap and makes a purchase, the affiliate is still rewarded for that transaction.