Muri uku kwezi, twabonye amabwiriza yo gukora plastike, nka Belize, Kanada, Tonga na Indoneziya. Ibicuruzwa birimo impande zimbere, gukora impande zinyuma, gukora urukuta hamwe nibikoresho bimwe na bimwe, nk'igitoki, gukaraba, inkoni ya karuvati, ibinyomoro by'amababa, ibinyomoro binini, cone, waler, PV ...
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