Hunan Addition Instruments and Apparatus Co., Ltd. integrates researching,manufacturing and selling of petrochemical analysis instruments into a whole. Established in 2008 for research and development, and established as a sales department in 2015. Addition not only maintains the tradition of stable analytical instrument performance and exquisite craftsmanship, but also improves product performance and accuracy, and makes our products more intelligent, humanized, and personalized. Our company adheres to the principle of "Quality and Customer First", and the spirit of "Innovation and Excellence", and uses unremitting efforts and wisdom to provide customers with high-quality products. Our company has served thousands of companies, and our products have been exported to fifty countries, and stability of our products are deeply admired and sustained by old and new buyers at home and abroad. Addition Instruments is always listening to its users and thriving to perfect its products.