Hong Kong's two main supermarket chains said Sunday they have removed milk powder made by Swiss food giant Nestle from their shelves after a newspaper reported that samples contained the industrial chemical melamine. Spokeswomen from PARKnSHOP and Wellcome said the chains acted after Hong Kong's Apple Daily reported Sunday that tests it commissioned showed that Nestle milk powder made in China's northeastern Heilongjiang province contained the chemical. Nestle's Hong Kong office did not immediately comment. The company said in a statement last Wednesday that none of its infant formula and milk powder products contained melamine. Authorities in China have recalled milk and dairy products from 22 Chinese companies after samples were found to contain melamine, which can cause kidney failure.