On January 11, the new product of Yiyang Rubber & Plastic Machinery Group Co., Ltd. successfully rolled off the production line and passed the on-site test acceptance of domestic customers. The new product is GE420/GE800T large-size tandem internal mixer. This large internal mixer is the first in the world, and the whole process from design to production is completed within one year. The new product can not only meet the rubber mixing process of green tires, but also be suitable for the mixing of tread rubber with white carbon black. It has the characteristics of high efficiency and low energy consumption.