Gem, ke sephetho se setle sa tlhaho, 'me re balebeli ba gem.D&T Trading Co., Ltd. e tlamehile ho hlahisa letlotlo lena le letle ka ho fetisisa la tlhaho ho bohle ba ratang botle.
D&T ke e 'ngoe ea bahlahisi ba baholo, ba sejoale-joale ebile ba profeshenale ba Wuzhou, ba nang le boiphihlelo ba lilemo tse fetang 20, ba tsepamisitse maikutlo holim'a mahakoe a tlhaho a fetang 30 joalo ka ruby, safire le tsavorite.D&T haholo-holo tse romelloang linaheng tse fetang 100 joalo ka India, Thailand, United States, Poland, le Switzerland, 'me ba hapile botumo bo botle, E le khoebo e kopantsoeng ea lehakoe ho tloha thepa e tala ho ea ho tlhahiso, thekiso le litšebeletso.