Kev txheeb xyuas cov teeb meem txog cov noob pob kws, cov pob kws khov, cov pob kws ua pob kws tuaj yeem daws tau los ntawm Techik xim sorters. Techik xim sorter: impurity sorting: pob kws noob: dub pwm pob kws, heterochromatic corns, ib nrab pob kws, tawg, dawb me ntsis, stems. Frozen corns: blackheads, mildew, ib nrab pob kws, ncej, st ...