China
Chemmaster Tankers Co Ltd is a company specialized in the production and marketing of chemicals for tanker operations. However, the provided text does not offer specific information about the services and products offered by Chemmaster Tankers Co Ltd. It refers to a firm that focuses on concrete chemicals but provides no details regarding specific products, ship or facility types, certifications, or locations. Instead, the text mentions Chemmaster Inc., which was founded in 1974 and specializes in the production of chemicals for concrete construction. In 2020, Chemmaster Inc. acquired Vexcon Chemicals, which manufactures a range of concrete chemicals under various brands including Certi-Vex, Certi-Vex Envio, Certi-Vex Penseal, PowerSeal, and StarSeal.
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