In order to assure the quality of our products, we follow strict management and control from the raw material entering our factory to the manufacturing process and the finished products leaving our factory which enable the product quality traceable and assure the excellent and stable quality of our products. These have raised the popularity of “Double Dragon” in the market and won more and more customers’ favor.

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  Color testing machine
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  Gaseous phase chromatograph
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  Color testing machine
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  UV spectroscope
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  Melting point testing machine
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  Electronic analytical balance