Dr. O. Hartmann GmbH & Co. KG
Established in Stuttgart in 1932, we are now counting among the leading specialists of industrial process water treatment and optimization.On a production and storage area covering more than 4 500 m², we produce special chemical products for the trea
Introduction
Established in Stuttgart in 1932, we are now counting among the leading specialists of industrial process water treatment and optimization.On a production and storage area covering more than 4 500 m², we produce special chemical products for the trea...

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Chengde Quanli Industry and Trade Group Co., Ltd. is a diversified private enterprise group integrating coal, chemical, machinery manufacturing, commerce, transportation, logistics, and investment.
Temperature control system for both industrial and laboratory applications: up to 130 kW cooling capacity, -120°C to +425°C, high precision, fast temperature changes, interactive for process control and automation.