The leading potassium humate manufacturers include Shandong Chuangxin Humic Acid Technology Co., Ltd. (China), Humic Growth Solutions (USA), AGROPOWER S.A. (Ukraine), and Omnia Specialities (South Africa). These companies are known for producing high-quality potassium humate products used in agriculture, soil conditioning, and other industrial applications. They specialize in delivering various forms of potassium humate, such as granules, powder, and liquid formulations.