Finished chemical products. The end products turned out by the chemical industry in Texas have fallen mostly into three categories: detergents and soaps, paints and varnishes, and pharmaceutical chemicals. Output of these products has been more heavily concentrated in Dallas than in any other Texas city. In fact, one Dallas plant accounted for most of the state's total employment in soap manufacture. In 1993 there were 167 producers of soap, cleaners, and toilet goods in the state, with $1.2 billion in gross sales. The making of paint and related products was a significant manufacture in Dallas and particularly in Houston. Seventy-eight paint plants in Texas shipped products valued at $118 million in 1963. In 1988 there were ninety plants that had gross sales exceeding $281 million. In 1993, the number of plants dropped to eighty-five but gross sales exceeded $416 million. After World War II the Texas drug industry was small and rather specialized. Substantial quantities of veterinary medicines were produced and also some synthetic organic chemicals for medical use. However, there were no major production centers in 1968. In 1987, seventy-one manufacturers in the state reported gross sales of $432,774,592. By 1993 there were eighty-seven producers of drugs in the state reporting revenues of more than $1 billion.