Q1: How long does the delivery time? A: 10-15days after receiving PI confirmation and 50% advanced payment Q2: Do you offer OEM services? A: Yes, please provide drawing and requested quantities to discuss together. Q3: Can I add logo on products? A: Yes, but there is extra fee and MOQ. Q4: Is it possible that the product is malfunctioning when I get it? A: We generally do an inspection and record testing video for customers' reference when the order finished and before shipping.