The raw materials of Douai are sourced from the reputed vendors of the market. For now, Polyva has applied for 9 invention patents including 5 utility patents
Douai is designed and manufactured using high-quality material and the latest techniques in compliance with industry standards. Our film has good flexibility, the effective isolation of various substances and rapid dissolution of water
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The design of Douai is never out of date. Until now, we have developed 6 formula systems of PVA film with over 20 models of PVA film
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The design and material selection processes of Douai are strictly controlled. The adopted materials are all harmless which do no harm to human body
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Douai leads in design and technology. Water soluble film can also be tested and verified by professional authority
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The manufacturing process of Douai is safe and reliable. Established in 2014, Foshan Polyva materials CO., Ltd. specializes in development, manufacture and supply of water soluble PVA film
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A rigorous quality control process ensures zero defects and consistent quality. Water- soluble packaging bags are light which reduce the transportation cost