Tlhahlobo ea Maemo a Kopo eaFlange ea Sechaena e Hokahantsoeng ka Li-Valves tsa Bohareng ba ButterflyLiindastering tse ling
Sengoliloeng sena se sekaseka linyeoe tsa ts'ebeliso ea li-valve tsa lirurubele tse hokahantsoeng ka har'a liindasteri tse fapaneng tsa China, li bonts'a ts'ebetso ea tsona e ntle tlasa maemo a fapaneng a ts'ebetso, ka sepheo sa ho fa babali litšupiso tse ling mabapi le lits'ebetso tsa valve ea serurubele.