News Releases / 2018

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  • January 9, 2018

    Notice about Counterfeit Version of Rengo's Anti-mold Agent WaSAAce®


    Rengo Co., Ltd. (Head Office: Kita-ku, Osaka; Chairman, President & CEO: Kiyoshi Otsubo) thanks its customers for their support of its products.
    The company has learnt that an inferior counterfeit product resembling the anti-mold agent WaSAAce® has recently been in circulation, especially in the Chinese market. The counterfeit product uses the WaSAAce® trademark and the Rengo logo, and is disguised to look like the genuine product. It has resulted in harm to a number of customers.
    The anti-mold effects of the counterfeit are extremely weak and the effective period is short. The quality of the individual packaging is also poor, leading to breakage in some cases. Due to these and other deficiencies in the counterfeit, there have been reports of its use leading to outbreaks of mold in imported goods.
    Rengo will respond with decisive action against manufacturers and distributors of the counterfeit product, further strengthening monitoring activities with the aim of completely eliminating such items. Rengo request that its customers remain vigilant in the meantime. If you suspect a product of being counterfeit or have other concerns, please contact Rengo or the WaSAAce® general sales agent, Ajinomoto Trading, Inc.
    Rengo also asks customers to understand that it accepts no responsibility for incidents of mold contamination or other damage associated with use of the counterfeit product.


    enuine product

    Genuine product

    Counterfeit product

    Counterfeit product


    Differences in the print design of the genuine product (left) and the counterfeit product (right) :

    The genuine product bears the imprint “Made in JAPAN,” while the counterfeit says “Made in China.”
    Unlike the genuine product, the counterfeit does not have the Rengo logo printed in katakana script (レンゴー), and does not bear the warning “Do Not Eat” in Spanish (“No Ingerir”) or Portuguese (“Não Ingerir”).

    Rengo asks its customers to continue their support of the anti-mold agent WaSAAce®.


    WaSAAce® Manufacturer


    Functional Materials Sales & Marketing Department Rengo Co., Ltd.
    Shinagawa Season Terrace, 1-2-70 Konan, Minato-ku, Tokyo, Japan 108-0075
    Tel. 03-6716-8651

    WaSAAce® General Sales Agent


    Release Paper & Fine Chemicals Department Ajinomoto Trading, Inc.
    11th floor, Tradepia Odaiba, 3-1 Daiba 2-chome, Minato-ku, Tokyo, Japan 135-0091
    Tel. 03-3528-4415