The intent of this RFR is to establish a contract with one or more contractors who can provide materials or services for MassCor Industries. MassCor reserves the right to add contractors at anytime during the life of the contract, if necessary. This RFR is designed to identify core product categories that are representative of each contractor's product line for the commodity or service as specified. However, such representation is not limited or restricted to those product categories which are identified later in this RFR, but are specifically referenced for the purpose of determining acceptable pricing or discounts. The SSST reserves the right to add mutually agreed upon items/services at any time during the term of the contract.