Zofunika zokutira:
1. Cfilimu yogwira ntchito ya optic
2. Coumboni wa zala zala, wosalowa madzi ndi anti-filimu yoyipa
Makhalidwe a Pulogalamu ya Zhenhua:
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Perekani zida zokutira zofananira ndi chithandizo chaukadaulo chaukadaulo kwa opanga makampani ndi makasitomala.
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Perekani mayankho ogwira mtima, apamwamba komanso otsika mtengo pazatsopano zopitilira ndikukula kwamakampani.
