Three Japanese importers have begun recalling millions of Chinese toothpaste products in Japan after finding a chemical used in antifreeze, officials said Wednesday.

The toothpaste products, which contained small amounts of diethylene glycol, a chemical found in antifreeze, were all produced in different plants in China.

Soshin, a Tokyo-based cosmetics manufacturer and importer, began recalling about 620,000 toothpaste sets, sold to about 100 inns and hotels across Japan, said Tokyo Metropolitan Government official Yasuaki Kawano.