Kedu otu esi amata ọdịiche dị n'etiti eriri optic dị mma na nke na-adịghị mma?
1. Ihe mkpuchi mpụta: 1. A na-ejikarị polyvinyl chloride (PVC), polyethylene, ma ọ bụ polyurethane na-egbochi ire ọkụ (LSZH) eme ihe mkpuchi mpụta nke eriri anya dị n'ime ụlọ. Ihe mkpuchi mpụta ahụ dị nro, na-egbuke egbuke, na-agbanwe agbanwe, ma dịkwa mfe iwepụ...
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