Tencent Holdings Ltd, Asia's largest Internet company, has set up e-commerce and Internet finance companies in the Qianhai economic zone in Guangdong province to tap the nation's testing ground for more liberal financial policies. The company will invest at least 10 billion yuan ($1.6 billion) in the district near the southern Chinese city of Shenzhen, Jerry Huang, a director of investor relations at Tencent, said in an e-mail on Tuesday.

Crude oil refining rate down