UPDATE 1-Costco to enter China through Alibaba's Tmall
October 14, 2014 at 07:08 AM EDT
Oct 14 (Reuters) - U.S. warehouse club operator Costco Wholesale Corp said it would open an online store in China using Alibaba Group Holding Ltd's fast-growing Tmall online marketplace, entering the country's booming ecommerce market to combat slowing sales at home.