Plastics coloring is mainly inorganic and organic pigments, it is required to have a high degree of color strength and brilliant; good transparency or hiding, dispersion, weather resistance, thermal stability, chemical stability, electrical function, environmental performance. Coloring size. Coloring power directly determines the amount of pesticide manufacturers colorant colorant generally decrease with increasing particle size of the colorant, organic pigments inorganic pigments color strength higher than many, when the color pigments and white pigments and colorants when used pesticides color strength can be significantly improved, and now organic pigments and ultrafine particles are widely used and developed. Dispersibility. Coloring agents, also known as food colors, food coloring is the main purpose of the food given to color and improve food color substances. The most commonly used food colorants world there are more than 60 kinds of pesticide colorants Which high-volume, China allows the use of 46 species, divided into two groups according to their origin and nature of food colorants and synthetic natural food colorants. With the improvement of people's awareness of food additive safety, to develop natural, nutritious and versatile natural colorants it has become the development direction of the pesticide manufacturers colorant colorants, Weifang Fuyuan (certified), pesticides and coloring agents from the Weifang Fuyuan Environmental Technology Limited. 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.