Damotianyu Co., Ltd. (formerly Beijing Damotianyu Petroleum Resources Technology Co. , Ltd.) was established in 2003, it is the exclusive agent of Nittoseiko Analytech Co., Ltd. (formerly Mitsubishi Chemical Analytech Co., Ltd.) of Karl Fischer moisture meter, titrator, moisture gasification device, turbidimeter in the Chinese mainland area, at the same time,it is also the official agent of Mitsubishi Chemical group Karl Fischer reagent in China, specializing in the promotion, sales and after-sales service of the above products.