Dovianus BV
In the late ‘70s, our company recognized that drawing process samples in open containers invited contamination and inaccuracy, and also posed serious health and environmental risks. Our response: the Dopak® sampling system, which quickly became the i
Introduction
In the late ‘70s, our company recognized that drawing process samples in open containers invited contamination and inaccuracy, and also posed serious health and environmental risks. Our response: the Dopak® sampling system, which quickly became the i...

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Yixing Chengyuan Chemical Co., Ltd. (formerly Yixing Jialingda Chemical Co., Ltd.) is located on the beautiful shore of the Taihu Lake Lake. It is adjacent to the Taihu Lake Lake in the east and Jinling Lake in the west. Our factory was established i