Seven environmental protection NGOs have appealed for domestic and international fashion brands to set up screening systems to identify polluters in their supply chains, a report said on Wednesday.

The textile industry is said to be a continuing source of water pollution in China, and that dyeing and printing enterprises in this industry are reportedly the major polluters.

Some suspected polluters are suppliers for world-renowned clothing brands such as Polo Ralph Lauren, Uniqlo and Tommy Hilfiger, according to the report, which was issued by the NGOs.