Black tea can be stored for long periods, while green tea lost its freshness after 12-18 months, black tea can be stored for years without losing the flavor and it was kind of tea prefer in the West for long-term archiving and contain more caffeine.
Depending on the quality of black tea which is divided into black tea products at all levels of different types. TCVN, black tea exports are graded like OPA, BOP, FBOP, PS, P, BPS, F and DUST.
Our tea is produced on modern lines of Japan and Taiwan with 100% natural flavors do not use chemicals
– Our grading system:
OPA, OP, BOP, FOP, GFOP, TGFOP, PS, F, D, etc.
– Processing technology:
Orthodox and CTC.