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Producing TDO since 1983, and a participating drafting unit of the Chinese industry standard for thiourea dioxide, HG/T 3258-2010.”","path":"/entities/yantai-dasteck-chemicals-co-ltd-q141534379","canonicalUrl":"https://readyscan.ai/entities/yantai-dasteck-chemicals-co-ltd-q141534379","machineUrl":"https://readyscan.ai/discovery/entities/yantai-dasteck-chemicals-co-ltd-q141534379.json","modifiedOn":"2026-10-24"}],"subject":{"slug":"yantai-dasteck-chemicals-co-ltd-q141534379","name":"Yantai Dasteck Chemicals Co., Ltd.","questions":[{"question":"What is Thiourea Dioxide?","path":"/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-answer-content-native-digital-agencies-9e8713f07a2d75b1-a-2b76ceb02fc62b07e410"},{"question":"Who manufactures Dasteck TDO?","path":"/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-answer-content-native-digital-agencies-9e8713f07a2d75b1-a-432610d9822857050ce0"},{"question":"How can buyers request TDS, COA or a sample?","path":"/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-answer-content-native-digital-agencies-9e8713f07a2d75b1-a-cedef32cc8276d9afbb6"},{"question":"Is paper-grade FAS the same as TDO?","path":"/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-answer-content-native-digital-agencies-9e8713f07a2d75b1-a-ec8a626a82c4f4ff039b"}],"facts":[{"id":"content-native-digital-agencies-9e8713f07a2d75b1-a-7f7190195f58fe3282ba","label":"Yantai Dasteck Chemicals Co., Ltd.","value":"“Manufacturer of Thiourea Dioxide (TDO, CAS 1758-73-2) for textile reduction, paper-grade Formamidine Sulfinic Acid (FAS) for pulp and paper, and Thiourea and Dicyandiamide for specialty use. Producing TDO since 1983, and a participating drafting unit of the Chinese industry standard for thiourea dioxide, HG/T 3258-2010.”","path":"/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-fact-content-native-digital-agencies-9e8713f07a2d75b1-a-7f7190195f58fe3282ba","questionPaths":[]},{"id":"content-native-digital-agencies-9e8713f07a2d75b1-a-2b76ceb02fc62b07e410","label":"What is Thiourea Dioxide?","value":"“Thiourea Dioxide (TDO, CAS 1758-73-2) is a sulfur-containing reducing agent used for textile reduction clearing and stripping. For pulp and paper applications, Dasteck supplies a separate paper-grade FAS product line.”","path":"/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-fact-content-native-digital-agencies-9e8713f07a2d75b1-a-2b76ceb02fc62b07e410","questionPaths":["/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-answer-content-native-digital-agencies-9e8713f07a2d75b1-a-2b76ceb02fc62b07e410"]},{"id":"content-native-digital-agencies-9e8713f07a2d75b1-a-432610d9822857050ce0","label":"Who manufactures Dasteck TDO?","value":"“Yantai Dasteck Chemicals Co., Ltd. has produced Thiourea Dioxide since 1983 and publishes a design capacity of 10,000 tonnes per year.”","path":"/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-fact-content-native-digital-agencies-9e8713f07a2d75b1-a-432610d9822857050ce0","questionPaths":["/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-answer-content-native-digital-agencies-9e8713f07a2d75b1-a-432610d9822857050ce0"]},{"id":"content-native-digital-agencies-9e8713f07a2d75b1-a-cedef32cc8276d9afbb6","label":"How can buyers request TDS, COA or a sample?","value":"“Use the contact page to request the current TDS, SDS, batch COA, sample or quotation. Include the product, application, quantity and destination.”","path":"/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-fact-content-native-digital-agencies-9e8713f07a2d75b1-a-cedef32cc8276d9afbb6","questionPaths":["/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-answer-content-native-digital-agencies-9e8713f07a2d75b1-a-cedef32cc8276d9afbb6"]},{"id":"content-native-digital-agencies-9e8713f07a2d75b1-a-ec8a626a82c4f4ff039b","label":"Is paper-grade FAS the same as TDO?","value":"“They share the same confirmed chemical identity and CAS number, but Dasteck supplies TDO and paper-grade FAS as separate commercial product grades and lines.”","path":"/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-fact-content-native-digital-agencies-9e8713f07a2d75b1-a-ec8a626a82c4f4ff039b","questionPaths":["/entities/yantai-dasteck-chemicals-co-ltd-q141534379#company-answer-content-native-digital-agencies-9e8713f07a2d75b1-a-ec8a626a82c4f4ff039b"]}]},"selected":{"language":"en","title":"Yantai Dasteck Chemicals Co., Ltd.","description":"Yantai Dasteck Chemicals Co., Ltd.: “Manufacturer of Thiourea Dioxide (TDO, CAS 1758-73-2) for textile reduction, paper-grade Formamidine Sulfinic Acid (FAS) for pulp and paper, and Thiourea and Dicyandiamide for specialty use. 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