Lishenflex joalo ka moetsi le morekisi oa li-slings tsa poly round naheng ea China, li-slings tsohle tsa poly round li fetisitse litekanyetso tsa setifikeiti tsa indasteri ea machabeng, 'me u ka netefatsoa ka botlalo ka boleng. Haeba u sa fumane li-slings tsa hau tsa Intent poly round lethathamong la rona la lihlahisoa, u ka ikopanya le rona, re ka fana ka lits'ebeletso tse ikhethileng.