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INESA Scientific Instrument Co., Ltd. is a joint-stock key enterprise under INESA (Group) Co., Ltd., formerly known as Shanghai Precision Scientific Instrument Co., Ltd. Shanghai REX Instrument Factory.

REX , the self-owned brand of INESA Scientific Instrument Co., Ltd since 1940, is the cradle of China analytical instruments dedicated to the electrochemical instrument industry for more than 70 years. As one of the largest scientific instrument groups in China, it has grown into a high-tech enterprise of R&D, production, sales, application, integration and service.

REX, always focused on water analysis, has a variety of laboratory/portable pH meters, conductivity meters, Ion meters, dissolved oxygen meters and multi-parameter analyzers for various test needs in different applications.

Now, we are strive to develop from Professional scientific instrument manufacturer to leading scientific instrument manufacturer and traceability system solutions and operation service provider.


Core concept: precision perfect

Core values: honesty, responsibility, customer, team, enterprising

Pursuit of goals: To improve people's quality of life, provide high-tech products and quality services



■  The most influential domestic manufacturer in the scientific instrument industry

■  ISO9001 Certificate for Quality Management system

■  ISO14001  Certificate for Environmental Management system

■  Shanghai “Brand-name Products”

■  Shanghai "Famous Trademark"


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