A majority of the EOC procurement requirements are initiated by EOC employees and then processed through Penn State University Purchasing in State College, PA. The EOC strives to conduct business in a fair and equitable manner using a competitive bidding process wherever practical. Purchasing decisions are made based on quality, service delivery and price. Minority, small, disadvantaged, women-owned and environmentally responsible businesses are encouraged to participate in Penn State's supplier program. The Penn State purchasing process along with purchase order terms and conditions can be found at the following website: http://www.purchasing.psu.edu/ . When appropriate, vendors should register for Penn State's bidder list at the website: http://www.purchasing.psu.edu/suppliers/ . Under the Penn State Purchasing Card system, authorized Penn State employees may purchase directly from vendors that take credit cards for procurements less than $2,000. Procurements are processed as standard credit card purchases. All purchases made by the Electro-Optics Center are Pennsylvania state sales tax exempt along with a few other states. The tax exempt certificate can also be found at http://www.purchasing.psu.edu/.