What is the delivery time ?A3:15-30 days, it various according to the material and quantity requirement.Q4:Do you have any certification ?A4:Yes,We have CE, ISO9001: ISO2000 certification.Q5:What are your payment terms?A5:T/T 30% deposit, balance 70% paid against copy of B/L. Trade Assurance, Paypal, L/C, West Union can be negotiated.