
Fluid - formed six months ago from the merger of Hybrid, a design company, and Clear Marketing Concepts - said that 34 establishments had initially agreed to allow this form of advertising on their premises.
Marketing director, Simon Squibb, said the coaster medium did have the capability of conveying a message to a target audience effectively and impactfully.
"We will lay it down in front of people as they talk and drink and eat. But all the while, the coaster is just sitting there quietly talking to them every time a glass is lifted, he said.
The bars and restaurants are mostly located in the upmarket central business district of Hong Kong and Squibb said that the target audience was high-income professionals between the ages of 25 and 45.