How we know our tea is pure: Zealong is one of the very few tea companies to hold ISO22000 HACCP certification - the world's highest food safety standards. Our traceability system can identify batch specific teas by day, block and processing method which far exceeds industry standards. We are certified and audited by Swiss Consultancy SGS, the world's leading inspection, verification, testing and certification company and we are USDA certified organic, so when we say we know our tea is pure and safe, we really know our tea is pure and safe. You can taste the purity of Zealong Black (Hong Cha) tea from the very first sip
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