Thiourea Formaldehyde

A member of the amino plastics family made by the condensation of thiourea with formaldehyde. The resin was developed in the 1920s by Charles Rossitor of the British Cyanides Company. The resin was used to make "Beetle" tableware, whose unusual name was derived from the trademark of the British Cyanides Company (a beetle). Similar tableware was marketed under the name Bandalista and Birmite. By the mid-1930’s new urea formaldehyde products with similar qualities of durability but with better water resistance and no chemical odor had displaced those made of thiourea formaldehyde.
See also Amino Plastics.
Blackall, A.C. "Molded Dishes from New Synthetic Resin," Plastics & Molded Products Vol 3:11 (Nov. 1927), 606-607.
Whittington’s Dictionary of Plastics, 2nd ed., 315.