William Robert Keller founded Keller Pharma Consultancy (Shanghai) Co. Ltd. Presently, he is Chairman of Coland Holdings Ltd., Chairman of Coland Pharmaceutical Co., Ltd. (a subsidiary of Coland Holdings Ltd.) and President of Pharmaceutical Association of Shijiazhuang City. Mr. Keller is also on the board of Hua Medicine Ltd., Wuxi Biologics (Cayman), Inc., Cathay Biotech, Inc. and Artisan Acquisition Corp. and Vice President at Roche Diagnóstica Brasil Ltda.

William Robert Keller previously occupied the position of General Manager of Roche (China) Co. Ltd. and General Manager for Shanghai Roche Pharmaceutical Co., Ltd. (a subsidiary of Roche (China) Co. Ltd.), Deputy General Manager of Zhangjiang Biotech & Pharmaceutical Base Development Co., Ltd, Chairman for HBM BioMed China Partners Ltd, General Manager of Hoffmann-La Roche, Inc., General Manager of Productos Roche SA and Deputy General Manager of Produtos Roche Químicos e Farmacêuticos SA.

He received an undergraduate degree from School of Economics & Business Administration.