Muaj peev xwm:1-3 TPH;3-5 TPH;5-10 TSI
Nta thiab qhov zoo:
1. Compact qauv, me me hneev taw.
2. Nruab nrog lub thawv ntim lub hnab ntim khoom siv los ua cov khoom siv raw thiab txo cov neeg ua haujlwm hnyav.
3. Siv lub qhov hnyav hopper kom tau txais cov khoom xyaw batch los txhim kho kev tsim khoom.
4. Tag nrho cov kab tuaj yeem paub tswj tsis siv neeg.