Lishenflex e le moetsi oa profeshenale li-slings tsa 2 tonne ea le mofani oa thepa naheng ea Chaena, li-slings tsohle tse phahamisang lithane tse 2 li fetile litekanyetso tsa setifikeiti tsa indasteri ea machaba, 'me u ka tiisetsoa ka ho feletseng ka boleng. Haeba u sa fumane li-slings tsa hau tsa Intent 2 tonne lethathamong la lihlahisoa tsa rona, u ka ikopanya le rona, re ka fana ka lits'ebeletso tse ikhethileng.