Buy Automotive Quick Connector 5/16'' 3-Way,Our company is interested in this Quick Connector. We want 50000 pieces per year beginning from February 2015. 1) What will be the price, approximately, with such quantity? What will be the price, including export rates from China? 2) Would you give us 5 samples. 3) Would you give us a drawing of Quick Connector. 4) What is the material of housing. 5) What is the material of sealing O-Rings? 6) Is it fuel Quick Connector?