Factbox-Wells Fargo's business in China, where senior executive faces an exit ban

HONG KONG (Reuters) -Wells Fargo has suspended all travel to China after a banker was blocked from leaving the country, a source said, bringing the U.S. bank's operations in the world's second-largest economy into focus. The employee, Chenyue Mao, who was born in Shanghai and based in Atlanta, currently serves as a managing director at the U.S. commercial bank, specialising in international factoring business. * Wells Fargo's China presence is much smaller than its Wall Street peers.