(1) Re-structure

•      Improve structure of coal bunker

•      No influence to the structural strength

•      No coal leakage

(2) Expansion connection

•      Performs better than steel

•      Easy to maintain

•      No leaking

•      Durable

(3) Gate valve re-design

•     Smooth coal flow

•     Hydraulic driving system

•     No jamming

•     Less maintenance

•     No leaking

(4) Fine tuning