In May 2022, Guangxi Kebao Paper Industry Co,.ltd. signed a contract of pulping system with Yunda including ZDG425 drum pulper, bale breaker, chain conveyor. The ZDG425 drum pulper has a diameter of 4250mm and a total length of 38 meters. Daily production capacity up to 1300 tons.
In June 2023, under the careful installation of Yunda's installation service team, the drum pulper was completely installed with a high standard of the Radial deviation of supporting ring ≤0.8mm and the Radial deviation of entire drum body ≤5mm.