Cut the Hemp plants in small pieces and dry the pieces with a mesh belt dryer.
Soaking the dried hemp pieces in cold ethanol, and spin dry to get the solvent.
Separate the residue from the solvent, make the solvent clean.
Evaporation, it means to separate the ethanol form the solvent, ethanol will be recycled.
Distillation to get CBD/TCH oil.
chromatographic analysis machine to separate the different elements from the oil.
drying or crystallization.