Ibisabwa byo gutwikira:
1. Pisubiramo optique ya firime
2. Anti igikumwe, kitagira amazi na anti-firime mbi
3. Dfirime
Indangagaciro za Gahunda ya Zhenhua:
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Tanga ibikoresho bifatika hamwe nibikoresho bya tekinike bifatika kubakora inganda nabakiriya.
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Tanga ibisubizo byiza, byujuje ubuziranenge kandi bidahenze kugirango bikomeze guhanga udushya no gukenera iterambere ryinganda.
