Qingdao Kehai is a high-new technology company that produces itaconic acid series and sodium gluconate series. Qingdao Kehai Biochemistry Co. Ltd has set up bio-fermentation engineering technology research centers. It is the largest Itaconic acid manufacturer in the world and its market share is about 44% in 2019.

    Zhejiang Guoguang Biochemistry Co.,Ltd. is founded in 1994. It is a high-tech enterprise. Its itaconic acid project was certified as National Torch Plan Project by the Ministry of Science and Technology and was supported by National Innovation Fund. It is the second-largest Itaconic acid manufacturer in the world and its market share is about 38% in 2019.

    Chengdu Jinkai engages in the production and sale of organic acids and biological agents, such as itaconic acid and kojic acid, etc. Its market share is about 10% in 2019.

    Fuso Chemical (China) mainly engages in the production and processing of the ultra-high purity colloidal silicas electronic materials and organic acids such as malic acid, citric acid, etc. Its market share is about 6% in 2019.

    Aekyung Petrochemical Co., Ltd. is a Korea-based company mainly engaged in the petrochemical business. Its market share is about 1% in 2019.