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Peng Hui, the maintenance worker of the dowty retarder, has changed into dark blue cotton work clothes and thick-soled shoes, pushing a tool cart, carrying a tool bag and a water bottle, and starting

On June 18th, Sha Dongjuan, Vice Chairman of Jining City Federation of Industry and Commerce, Xie Yongjing, Office Director of Jining City Federation of Industry and Commerce, and his entourage visit

"Re-testing the installation height of the dowty retarder is 56 mm, which is in compliance with the regulations."

On June 9, the 2021 meeting of the School Enterprise Cooperation Committee of the Business School of Shandong Polytechnic Vocational College was held in the administrative building of the Shandong Pol

It turns out that this is the dowty retarder, which is installed on the steel rail and contacts the wheels by sliding the cylinder cap head to brake and decelerate the freight vehicle.

When you come to the truck marshalling yard where Jiang Weihua works, you will see rows of "iron mushrooms" dowty retarder clinging to the rails. When the trucks that have been unwrapped and dropped f