Home | EPI Environmental Products Inc. biodegradable plastic, degradable plastic, oxo-biodegradable plastic, Totally Degradable Plastic Additives, TDPA, Enviro Cover System, alternative daily cover, MSW bale wrap EPI is a pioneer in oxo-biodegradable plastic additive supplier and markets Totally Degradable Plastic Additives (TDPA) and Enviro Cover, an alternative daily cover. TDPA is used for making degradable plastic, biodegradable plastic, oxo-biodegradable plastic products. Enviro Cover is a degradable polyethylene film, used as an alternative daily cover in landfills. Enviro Wrap is a degradable stretch film for wrapping municipal solid waste bales.