We are now looking for new suppliers in China. You could find enclosed some filter references we need to find from new supplier. Also would you please reply to the following questions in order to help us: 1- How many employees your company have? 2- What is your annual production? (how many pcs in air, oil, fuel ....) 3- Does your production is fully tested ? 4- Is it possible to sell under our own box? what minimum quantity? 5- Finally, what is your MOQ per item? Finally we plan to come to China end of April, that would be a pleasure to visit your factory. Waiting for your reply thanks a lot.