PM Team

PM Team is our core center of management.  They interface with You, our clients, provide technical solutions and options, guide development processes and lead technical teams to achieve Your specifications and applications.

Mr. Y.F.  Tsai

Sr. Director of Product Management

Mr. Tsai leads teams in developing Keiga’s newly developed amplifiers and has guided clients into IoT, Voice control, Internet Streaming, and the IP Management world of Amplifier applications.

He has over 30 years of experience in developing audio electronic products such as USB headsets, Medical listening devices, PC audio cards, PC Speakers, MP3 and RF products.  His products have been selected the Best Choice of Computex and achieve number one market share in Taiwan while working for Creative Labs, Formosa21 Inc., and Aim Inc.

Mr. Tsai holds two Bachelor degrees in Electrical Engineering from Taipei Institute of Technology, Taipei Taiwan and English Literature from SooChow Uinversity, Soochow China.  He enjoys swimming and camping with his family, wife and two kids.


Ms. Demi Cheng

Accounts Specialist

Demi is the linchpin of PM Management Team.    She coordinates with customers and factories with her influence power smoothing all the logistics and operational liaison issues.

She holds a Bachelor degree in Chinese Literature. As the mother of a beautiful baby, she loves to watch movies and listening to music.

 Ms. Amy Su

Assistant Coordinator

Amy assists Demi in the areas of logistics and operations.  She is serious in every detail and strict with herself at work yet always has a pleasant attitude.

She studied Civil Engineering in college and likes reading and watching movies.