Adding a coloring agent in modern feed industry and modern animal husbandry and aquaculture industry increasingly common. The aim has two: First, by changing the color of the colorant feed. Especially in the growing use of non-conventional feed ingredients, the colorant is added in order to cover up some of the non-traditional feed ingredients (such as rapeseed meal, etc.) bad color, to meet user mental habits fertilizer colorants, increase market competitiveness; Meanwhile, also stimulate appetite and attractant effect; the same effect may be referred to the feed of colorant colorant. Pigments in plastics processing thermal stability index related with some pigment concentration at different concentrations, which vary greatly in heat stability, such as CI Pigment Violet 23 is used for coloring fertilizers HDPE colorant Company, concentrations of less than 0.025% resistant heat only 200 ℃, more than 0.1% of fertilizer colorant products, only 260 ℃. (2) thermal stability index pigment material solution and application requirements regarding quality pigments in plastics processing thermal stability index in an application solution quality and a certain concentration, does not mean its targets in other comparable solution quality such as the ability of CI Pigment Violet 23 polyester dope when coloring 260 ℃ / 4 hours. Therefore fertilizer colorants Which high-volume, be careful to choose the test after the pigment in these usage. (4) adding pigment in plastics processing and titanium dioxide concentration of heat-related indicators in general, titanium dioxide is added after the heat index will decline. (5) the concentration of colored resin itself adding heat-related indicators and titanium dioxide (5) due to thermal degradation such as yellowing discoloration occurs when colored resin thermal stability of the resin is heated itself, which will also affect the pigment Application heat index in the plastic. Which fertilizer colorants high credibility _ Weifang Fuyuan (certified) _ fertilizer colorants provided by Environmental Science and Technology Co., Ltd. Weifang Fuyuan. Weifang Fuyuan Environmental Protection Technology Co., Ltd. (www.wfdafuyuan.com) (www.wfdafuyuan.com) Shandong Weifang, the other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Weifang Fuyuan leadership with the staff warmly welcome all inquiries negotiations to create Weifang Fuyuan a better future.