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, we really know our tea is pure. You can taste the purity of Zealong organic oolong (wulong) loose leaf tea from the very first sip
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