Tongzhou Ke-Yuan Tower Chemical Co., Ltd., formerly known as Tongzhou Filler Plant, was established in 1980. We have passed the standard attestation of ISO9001 International Quality System. Our company is the column test base of the Separation Engineering Research Center of Nanjing University, the only designated enterprise of column internals and fillers for the Separation Engineering Research Center of Nanjing University, the designated enterprise of the National Technology Center of Chemical ...
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