亘源语言研习社之导师均曾为以下之机构及团体，提供私人/小组的普通话课程及训练: 

• Australian Trade Commission
• Australian Consulate-General
• American Airlines
• Bain Consultant Company
• Ball Asia Pacific
• Bloomberg
• Cable Communications
• Canada Royal Bank
• CNN
• Credit Suisse
• DBS Bank
• Deloitte
• Goldman Sachs
• HP
• HSBC
• IBM
• JP Morgan
• Princess Margaret Hospital
• Richemont
• South China Morning Post
• Spanish Trade Commission
• The Thomson Corporation
• The Hong Kong Polytechnic University
• UBS
• Weber Shandwick Worldwide