● 全機采用GB-HT300樹脂沙造型鑄件，經回火處理和自然時效處理消除內應力。 Whole parts use GB-HT300 resin sand casting component, by tempering and natural aging to eliminate internal stress. ● 內藏式配重：配重附導桿，上下移動時配重不晃動。 Built-in counterweight: counterweight with guide rod, won’t be shaking when moving up and down. ● 各滑動面使用自動潤滑泵裝置，確保機床的使用壽命。 The sliding surface is with automatic lubrication pump device, to ensure the service life of the machine. ● 全密封鈑金，排屑不外露。 Sealed sheet metal and excretion inside the machine.