1.Test strictly: Each product is tested one by one before shipped out2.Warranty:  Long-term guarranteed quality3.Due time:  Delivery within 2-3 working days in usual after confirming customers’ payment4.Protective packing: Packing with bag and paper and antistatic foam box5.After-sale service: Excellent and Solicitous service, our members are full of enthusiasm are   glad  to serve for you.6.  Quotation: Please tell us the model which you want in time if you demand to quote price, because the product’s price change frequently. Then we will give you the reasonable price according to the standard.7. Payment: We suggest you chose to pay by Western Union except special situations.8. Delivery: According to the customers’ requirement.