Qingdao Florescence Co., Ltd ke moetsi oa Inner Tube le Rubber Flap ho tloha ka 1992, 'me re ka fana ka boholo bo felletseng ba Inner tube le liphahlo.Boleng bo ka tiisetsoa.
* Taolo ea Boleng: li-tube tsohle li tlameha ho kenngoa moeeng 'me li bolokoe ho feta lihora tse 24 ho lekola ho tiea.
* Amerika Boroa, Amerika Leboea, Russia, Asia, Bochabela bo Hare, Afrika le 'maraka o mong oa lefatše.
*Lihlahisoa tsohle tsa rona li entsoe ka thepa ea boleng bo holimo, kahoo u ka ba le thekiso e sa lefelloeng 'marakeng oa hau.
*Valve: Butyl e ka hare ea tube e nang le valve e tloaelehileng kapa V-valve ka boleng bo tšepisitsoeng.
*Matla a matla:6-7MPA,7-8MPA, 8-9MPA(tube e ka hare)
* E boetse e etselitsoe ho ithabisa ka metsing kapa lehloeng.