·全系标配比例背压阀

Full system standard proportion-al back pressure valve

·滚轮式料斗滑道

Roller Hopper Slide

·系统压力提升到17.5Mpa

The system pressure is raised to17.5Mpa

·主动力管非焊接技术

Non-welding technology of mainpower pipe

·新型石墨自润滑钢套

New graphite self-lubricatingsteel sleeve

·甬华标准外观升级

Yonghua standard appearanceupgrade