Chongqing To Guangdong Science And Technology Development Co., Ltd (Chongqing Oil Treated Equipment Manufacturing Co., Ltd) is a Sino-foreign joint venture. It is a hi-tech enterprise which is integrating research and development, production and sales of top-middle grade oil treated purification and regeneration equipment, air-and-soot purification equipment and pump water heater.
There are two brands—Yueshang and Guangshang under the...
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