Colorants maximum absorption wavelength determines its color, and the ability to absorb the maximum absorption at a wavelength determines its coloring power. But coloring is not only related to the structure and its chemical fertilizer colorants which company is strong, but also with the pigment easy to disperse about sex. Pigment easy to disperse the better fertilizer colorants Which high-volume, the higher the coloring strength. (4) The color strength and color has its significance. Such as the need dubbed dark tones should choose high color strength varieties (organic pigments) colorants manufacturer of large-scale chemical fertilizer, when required dubbed light tone should select varieties of low tinting strength (inorganic pigments). Get a paint color when missing or when the price is more expensive, the choice of other colors instead of the same color, but color strength of two different shades of the same formulated different requirements in place at the time. Natural colorants are driven, plants and microorganisms or processed to extract carotenoids. At present, the international market has been widely accepted and used natural pigment anthocyanin derivatives mainly marigold (lutein) and pepper dye derivative (capsanthin). In addition, the country also often use natural animals and plants as a coloring agent; such as the Ginseng powder, marigold pink, purple fertility flour, cassava leaf powder, pine needles powder, orange peel powder, Leucaena leaf meal, carrots, shrimp crab shell powder, seaweed, as livestock, poultry, aquatic products colorants. Which fertilizer colorants guaranteed | Weifang Fuyuan (certified) | fertilizer colorants 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.