Use dye coloring, as required evenly distributed pigment powder colored resin in powdered colorant which company big, so its good distribution, this conclusion can only be for injection products, especially thick-walled products, for Blown spinning products is another matter. Because the toner is generally not been pretreated, when it is mixed with the resin, the alone from the extruder feed port, a screw, to spout such a distance and in such a short time mixed plastics, to make pigment powder Molecular and colored pigment molecules join hands well - fully integrated, well powdered colorants Which reputation, is absolutely not guaranteed, there will be "cooked" phenomenon. However, this "cooked" phenomenon in the thick product will be masked out, powdered colorants Which product is good, the blown film, spinning products is obvious. So which method is still colored masterbatch based. Pigment content of livestock, poultry, aquatic exterior color depends on the feed intake and cumulative. The traditional extensive farming methods, since the feeding period is longer, powdered colorants, pigment accumulation in the body of animals, more MSG, the final appearance of color products is very pleasant, consumers are willing to accept, product prices are high; the contrary, Due to the rapid development of modern breeding and feeding techniques, livestock and poultry. Fish and other fast growing, feeding of the product is very short, the pigment thus obtained from natural feed accumulate few products pale, lose their appeal to consumers, price is also low. To solve this problem, it is clear the general needs help colorants. Which companies and large powdery colorant _ Weifang Fuyuan (certified) _ powdered colorant provided by Environmental Science and Technology Co., Ltd. Weifang Fuyuan. Weifang Fuyuan Environmental Technology Limited (www.wfdafuyuan.com) (www.wfdafuyuan.com) Shandong Weifang, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer demand. In Weifang Fuyuan leadership with the staff warmly welcome all inquiries negotiations to create Weifang Fuyuan better future.