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The paint bucket with a circular lid is very common in our daily life. However, the circular lid makes the painting process inconvenient. Because we can’t find a straight edge to clean the brush which is stained with paint. As a result, it is not only a waste of paint but also stains the ground. Fortunately, the improved paint lid provide a straight edge, which makes the painting process cleaner and less waste. This design dose not increase the cost , and very convenient for using.
Chongqing Technology and Business University