(1) Masterbatch storage after a period of time will absorb moisture, especially PET, ABS, PA, PC, etc., so according to the same color of the same process to dry and meet the water content requirements. (2) with masterbatch color to achieve the required color must be very careful, often occurs color and shade changes. (3) masterbatch and other additives will respond, use attention. (4) the choice of masterbatch dilution ratio should be noted. Selection of high dilution ratio, the lower the cost of production, but also by the processing equipment restrictions.