Q1: Are you trading company or manufacturer ? A1: We are trading company with factory. Q2: How long is your delivery time? A2: It's about 1 to 5 days for the goods have in stock, 1 week to 1 month for the goods need to be manufactured based on your order. Q3:Can we buy 1 pc of each item for quality testing? A3: Yes, we are glad to accept trial order for quality testing. Q4: What is your terms of payment ? A4: We accept T/T, Paypal, Western union and so on. Q5: What's your warranty ? A5: we have 1 year quality guarantee for our spare parts.