... Masterbatch1. EC11B: 75% exquisite CaCO3 powder, can be used in film and bottle, whiter than EC11C.2. EC11C ... : 75% exquisite CaCO3 powder, can be used in film and bottle.3. EC12B: 78% normal ... CaCO3 powder, can be used in film and bottle.4. EC21B: 80% exquisite ... film, sanitation towel film, OPE film, T-shirt bag, plastic drum, pipe tap, food packing, medicine packing, etc.)2. ...