Dear customers: Please read the following purchase instructions, and actively contact our company to understand and cooperate with our work, hope to cooperate happily, we will serve you wholeheartedly and provide the quality of high-quality products, and the price of good quality and low price. I wish everyone a prosperous business and a wide range of financial resources !!!Remarks: 1. The products sold by the company do not include freight and invoices. 2. The customer company that sends the courier needs to charge the courier fee first. 3. Customers who send logistics will all adopt the method of payment (the customer pays the freight when picking up the goods ). 4. The general logistics company is not delivered to the door, need buyers to the logistics company to mention.   Certification As an IS09001 certified company,YOUDO’s products have already passed the CE,GS,TUV,Z_WAVE test till now,and we also have ability to arrange other relevant testing and factory audit as you requirement,. ·CE ·ROHS ·GS ·TUV ·Z_WAVE TEST TILL ·Factory audit is available