Q1: Are you a factory? A: Yes. Our factory is located in Shenzhen, China. We have ID structure engineers, software engineers and hardware engineers. We can offer designs from structure, PCB, software to packing. You are welcome to visit us! Q2: Can you help to custom our own products? A: Yes, OEM and ODM are accepted. Logo printing and customized icon on the switches MOQ: 200PCs. Custom packaging require MOQ: 2000PCs Q3: How does your factory do regarding quality control? A: Quality comes first. We always pay great priority to quality controlling from the start to theend. All of our products have been tested by 48hours continuous load aging before ship out. Q4: What's your warranty? A: we offer 1 year warranty for non-manmade problems. We own the best after-sale service team, if any problem happens, our team will do our best to solve it for you. Q5 :Is sample available and free? A:Sample is available, but the sample cost should be pay by you. The cost of sample will be refund when your order comes to 1000PCs. Q6 : What is its lead time for samples and mass production? A: Within 5 days for samples and 15 days for mass production. Q7: How to pay for my order? A: TT , Western Union, PayPal or you can pay directly through Alibaba Trade Assurance. Q8: How to proceed an order for the products? A: For standard non-OEM products, you can place order with the link directly on alibaba and pay on line, you can also send us enquiry and we conclude the order detail so that you can pay. For OEM products, you can place order with the link directly on alibaba and pay on line and let us know your requirement in detail. You can also send us enquiry with your requirements in detail and we conclude the order detail so that you can pay. We will send you samples for confirmation prior to mass production.