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Latest update: 30/11/2016 18:49:54

Sincere Co., Ltd.

We produce a safe, low-priced and high-quality cleaning agent for potable water tanks.

We offer “Pearl Green,” a cleaning agent for potable water tanks, to building maintenance service providers and water tank cleaning companies throughout Japan. It is a safe, high-quality, low-priced water tank cleaner made entirely of food additives and can quickly wash out tough strains on potable water tanks. In addition, it is easy to rinse the tank after cleaning. We handle everything in-house, from procurement of raw materials to production, quality control and product sales, which is why we are able to fill our customers’ orders immediately. We have eight variations of “Pearl Green” for different types of tank material and contamination requirements.



Corporate name Sincere Co., Ltd.
Representative Shinya Shudou
Corporate website
Capital 10,000,000(JPY)
Number of Employees 95
Established date 1992
Head office: Country Japan
Head office: Address 1-9-12, Nishi, Sakano, Oita, 870-0309
Industry Manufacture of chemical and allied products
Main phone number +81-975923888

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