First of all, it is impossible that you buy the products from China with less price but the same or better quality like Europe. Their profit is about 4-5 times more than us, even more. But it doesn’t mean our products are not good. If their products could be used 10 years, and 5 years is no problem for ours. Maybe you don’t know some products you bought in Europe are from us, too. We suggest every customer could buy some samples from us for testing, the sample charge will be deducted in coming order.