Q1:Can I have a sample order for led light?A1：Yes, we welcome sample order to test and check quality. One sample or mixed samples are acceptable.Delivery time :1-2 days from Germany 7-10 days from China Q2：What is the delivery time of bulk order?A2：Inventory in Germany- 1-3days delivery from Germany to All European countries.Stock in China - 1 week delivery from factory OEM from China - 3-5 weeks for mass production for different products.Q3: How to pay for sample and bulk order?A3：Souring from Germany: SEPA credit in EURO to Holux GmbH( Commercial Invoice from Holux GmbH) Souring from China: T/T , L/C , Paypal ,Trade assurance on Alibaba in USD/EURO Q4: How to deal with the faulty?A4：Firstly, Our products are produced in strict quality control system and the defective rate will be less than 0.02%.Secondly, during the guarantee period, we will send new lights with new order for small quantity. For defective batch products, we will repair them and resend them to you or we can discuss the solution including re-call according to real situation.After-service from Germany directlyQ5: Can you supply the special lighting design?A5：Sure, LED lighting design including the Dialux simunlation,3D products renderings etc.