... Features: Flat, glued bottom with filling valve; Use: Automatic filling cement, chemicals, grains. Surface 4color HILK hi-speed automatic bag bottom ... line:Flat & glued bottom with filling valve;Different types for cement, chemicals, foods, tea, etc.4-color automatic printing2~4 paper ... .2 × 2.8 × 1.9 MWeight22.7 Mt 5 layer Cement Paper Bag Production Line