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Our company has a certain share in the global market thanks to our excellent aquarium nitrifying bacteria, flocculant for water treatment, high-quality employees, unique corporate culture and innovative teamwork spirit. Cleanwater Chemicals has been engaged in offering high quality polyDDA since 1986. As one of the leading polyDDA manufacturers and suppliers in China, we warmly welcome you to buy or wholesale the effective polyDDA with reasonable price from our factory, and get the free sample from us is you need.