Shandong Dongrun Instrument Science and Technology Co., Ltd. is a manufacturer of instruments and meters with well-equipped testing equipments and strong technical force.With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in water treatment, aquaculture and other industries.Our products are widely recognized and trusted by users and can meet continuously developing economic and social needs.We welcome you to contact us for future business relationships and achieving mutual success!