What is the FEI Advantage? When you rely on Field Environmental Instruments for your project needs, you get more than equipment. You get our commitment to quality equipment and supplies, dedication to customer service, and our drive to be the best in the business. It is for these reasons FEI continues to set standards in the rental and supply industry. From the initial phone call through the arrival of the invoice, our philosophy is to work with you by providing the highest level of customer service. Our goal is to ensure your projects are completed without interruption. New Office Locations Nationwide. We continually look for opportunities to grow our company by opening branches in cities where we don't have a presence to better serve our customers. We're flexible and open to talking to entrepreneurs who are interested in establishing and managing a new FEI branch. Contact/See yourself with FEI. FEI is always seeking new staff for sales, technical service, support and delivery for all of FEI's offices. If you're interested in being part of a team focused on helping environmental firms minimize their impact on the environment through the use of the latest technology and supplies, contact FEI's Pittsburgh headquarters office at 800-393-4009.