quantity: Q: Do you provide samples ? is it free or charged ? A: We don't offer samples for free. It shall be charged. We can refund the sample frees if your repeated order is with big quantity. Q: What is your terms of payment ? A: Payment<=3000USD, 100% in advance. Payment>=3000USD, 30% T/T in advance , 70% balance before shippment or against B/L copy. Q: About customization? A: ODM/OEM business partner will be warmly welcome.