We have been working on the related industry of plastic manufacturing for ten years.
As the environmental pollution problems become more serious day by day, we established
the company YI -JHONG DEVELOPMENT CO., LTD in 2004 and used“Coola" as our trademark.
We devote ourselves to the development of products for health care and environmental
protection by using non-toxic and recyclable materials. Our aims are to feedback the
society and promote the life quality of all people.
Our company has presented a successful hydraulic oral irrigator with global patents named “Coola Hydrojet”. Coola Hydrojet is the only product of it kind that is speed adjustable, electrical free, noise free, compact , needs no water reservoir and using the freshest water to increase oral health.
We will continue our effort to the development of better products to provide a better life for our customers.