1.Q:Do you have OEM service? Yes. Variety of products size, quality and quantity can be customized according to your needs. 2.what about the delivery time? normally 25-30days,exact delivery time depend on quantity and model of order. 3.what about payment term? normally we accept T/T,30%prepaid,70%before loading.Or at sight100%L/C. 4.Can you provide samples? yes,samples are free,customer just need bear the express cost. 5.what can customer do if they face quality problem? you can send us details of the problems with pictures,if necessary you can send us samples of problems,we will resolve the problem through different ways,like compensation,make discounts in new orders and so on.Don't worry we will bear the responsibility caused by us.