YUNDA FILTER has 12 patents for water filter cartridges.
YUNDA FILTER has got the authoritative NSF 53, NSF 42 and NSF 372 Certifications from NSF. Please click the following link:
NSF53: https://info.nsf.org/Certified/DWTU/Listings.asp?Company=C0304680&Standard=053
NSF42: https://info.nsf.org/Certified/DWTU/Listings.asp?Company=C0304680&Standard=042
China Top 3 Water Filter Manufacturer
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