Shanghai CHAI Instrument Co., Ltd., is integrated with R&D, production, sales and service and mainly engaged in the production and sales of petrochemical instruments, coal analytical instruments, environment analytical instruments, scientific and education analytical instruments like ion meters and acidity meters and other instruments and apparatuses. The products are widely used in the fields such as petrochemical industry, product quality supervision and inspection institutes, colleges and universities, research institutes, coal chemical industry and electricity environmental protection. Our company adheres to the enterprise principles of people-orientation, guidance by technology and survival with quality and attracts a group of experienced senior engineers for product R&D update and maintenance. Our team is composed of the staff with tens of years of experience in design, independent R&D, service and sales of petrochemical and coal analytical and inspection instruments and provides premium service for customers at home and abroad.