PH indicator 4-Aminoazobenzene/4-(Phenylazo)aniline

Guangzhou Sunton Biotechnology Co., Ltd.Founded in 2018, the company has rich experience in chemical production and sales.After ten years of development, the factory sales network all over the world, product quality testing and R & D personnel have college education or above.Integrity management is our principle, customer satisfaction is always our goal, we hope that through our efforts, get your recognition, welcome friends from all walks of life to visit our factory guidance!