System Three General Purpose Epoxy is our original product. It actually gave the company its name. From the founding of the company until just a few years ago it has been the workhorse of the product line. The system formulation, containing one resin and three curing agents or hardeners contains a significant amount of renewable materials. Long before "green” was in vogue the System Three General Purpose Epoxy System contained as much as 30% plant derived materials and has never contained any volatile organic compounds (VOC).