Feme ea tlhahiso ea bongata, lethathamo la polokeho ho fihlela litlhoko tsa hau.

Limela tse tharo tsa sejoale-joale tsa tlhahiso, lithupelo tse robeli tsa tlhahiso, tse koahelang sebaka sa lisekoere-mithara tse 30,000, Qingdao, Inner Mongolia, ningxia metheo e meraro ea tlhahiso ea lithane tse 30,000 tsa tlhahiso ea boka ba polyethylene.