Taiwan singer Ren Hsien Chi has been commissioned by Coca-Cola to re-launch its Tian Yu Di brand products in the mainland. The Tian Yu Di label, which includes bottled teas, juices and water, is the second mainland brand marketed by the American soft drinks giant. Mr Ren was in Guangzhou on Friday filming a commercial for the bottled water division. The mainland's bottled water market has been growing 40 per cent per annum, said Coca-Cola's senior China brand manager Tina Yiu. Asian Market Intelligence predicts the market would reach 2.5 billion cases next year, she said. Mr Ren is the second Mandarin popstar to be commissioned by the Tian Yu Di label. Earlier this year, Coca-Cola began airing adverts with Hong Kong singer Jacky Cheung Hok-yau to promote Tian Yu Di tea.