Promotion products mean some products on hot sale. they have same manufacture process with normal orders, so the quality is same too. But the price for promotion products is much lower. As we have a special product line to product them. We print 10 designs together with same process so our cost will down much too. We mark a long product time for promotion products. But the actual product time less than this. The orders for promotion products more, the waiting time less, and the production time less. Now we have 4 promotion products. We will open more soon one by one.