If your order is exempt from sales taxes, please attach a copy of your certificate of exemption to the purchase order email. Orders are shipped using either Fedex or UPS, at your request. You can include your Fedex or UPS account number on the purchase order, or if you prefer, we will add the cost of shipping to the invoice total. A copy of the invoice is emailed to you when shipment occurs. Standard credit terms are Net 30. See "Terms and Conditions" for more details.