Zhejiang Yiwu Huangjia Biochemical Co., Ltd. is a high-tech enterprise with more than 10 professors, senior engineers and researchers. It has excellent production equipment and world-leading technology. The company has successfully developed Huangjia natural brassinolide, which is the latest category. (Category 6) Plant endogenous hormones are internationally recognized as highly effective, broad-spectrum, non-toxic plant growth regulators with the highest activity. The company built the world's first large-scale industrial production plant of natural brassinolide, and it is the only enterprise approved by the Ministry of Chemical Industry to produce natural brassinolide.