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SRF carbon black is generally used that do not require strong coloring power, high coverage or to UV protection garbage bag production. Colors tend to gray blue, cheap and relatively easy to dispersion, so those only equipped with a single or twin screw extruder masterbatch small firms would choose such a carbon black. HAF carbon black particle size is half SRF carbon black particles, but it is twice as tinctorial strength. Brownish-red, its UV protection was stronger than carbon black SRF, and cost less than the P carbon black. It has good covering power, it can be applied in many ways. P carbon black is suitable for UV applications as well as the food industry, it was red and blue. JET carbon black has the most satisfactory color shading, dark, lustrous black. It is the smallest particles, but not easy to dispersion. Only those manufacturers shear mixer equipped with efficient dispersion of the agreement is available when using the JET carbon black. It is also the most expensive ordinary carbon black. Cost comparison shows that more expensive masterbatch get better results than the cheapest masterbatch production can be economically.