Plastic abbreviations are as follows -
Weight per Epoxide (likewise called EEW) VHMW
Very High Molecular Weight (regularly applied to polyethylene) UF
Urea Formaldehyde UP
Unsaturated Polyester (Thermoset) USDA
United States Department of Agriculture UL Underwriters Laboratory UV Ultraviolet ULDPE Ultra Low-Density Polyethylene UHMW
Ultra High Molecular Weight (frequently applied to polyethylene) UTS Ultimate Tensile Strength TAIC Triallyl Isocyanurate TM Transfer Molded TS Thermoset