... (tianjin) International Limited, produce Humate Series, Fulvate Series and Seaweed Extract. Potassium Humate, Super Potassium Humate, Sodium Humate, Super Sodium Humate ... , Humic Acid, Fulvic Acid and Seaweed Extract are all our best-sellers. Refiend Potassium Humic Acid Granular