Restaurants produce a large amount of edible waste oil. Some owners would pour it into the river which causes pollution in the soil and water.

Oil Bubble is a cleaning liquid maker that recycles and reuses waste oil. Making cleaning liquid by pouring the waste oil into Oil Bubble and adding water, natural foaming agent, and thickener. It can be used to clean the environment as well as wash hands. The peel can also be thrown into the machine to be made into essence, replacing the chemical essence. Using it, owners can reduce the cost of waste oil recycling and purchase of cleaning liquid, and pass on the environmental thinking to customers.