America Grey Instruments, S.A. de C.V.
Develop and manufacture industrial flow and level monitoring instruments for water/wastewater and process automation.
Introduction
We specialize in developing and manufacturing industrial flow and level monitoring instruments for critical applications in water and wastewater treatment, industrial process automation, and environmental monitoring. Our Greyline Level instruments, including ultrasonic models, offer precise and reliable measurements to ensure efficient and effective control in various industries.

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Yunnan Coal Chemical Group is a large provincial enterprise established in 2005 to implement Yunnan's strategy of large enterprises and groups.