Some of the main antioxidants in oolong tea, known as tea polyphenols, are theaflavins, thearubigins, and EGCG. These are responsible for many of its health benefits (1). Oolong tea also contains L-theanine, an amino acid shown to have positive effects on relaxation and cognitive performance ( 6 ). Common Certification: 1. Health Certificate. 2. Phytosanitary Certificate. 3. Fumigation Report. 4. Tea board clearance certificate. 5. SGS Report as per buyer requirements. Place Of Origin: Assam. Port Of Loading: Kolkata Port (CPT Port). Payment: LC Or Discuss With Buyer. Delivery Time: Shipment within 10 days.