Users feel very difficult when they twist a rusty screw. Today, PLUS solves this problem.It gets the greatest benefits with the least cost. It achieves the goal of saving energy by changing the product shape. When users need to spend a lot of effort to twist a screw, they can put another screwdriver through the hole on the handle, to form of a cross. According to the principle of leverage, it can save user's energy.

I'm Wang Tong, an industrial designer from China. I took a master's degree in industrial design at Design Institute of Jiangnan University, which is one of the most excellent design institute in China. I was a UX designer in Royal Philips in Shanghai, and I am working in Alipay of Alibaba as a UX designer. I have two patents and a number of design awards in China. My design principle is getting the greatest benefits with the least cost. I am honored to be able to use the design to change people's future.

When I screwed a rusty screw, I felt very difficult and hand hurt. That's why I do this design. Solving this problem is beneficial to open manufacturers'mind, and they can obtain larger gains from little changes. The ingenious design of more environmental protection and conservation to avoid complicated shape.