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Zhejiang Yingfeng Optical Communication Technology @UCxx2trsK4J6YOj_XXFuqXYA@youtube.com

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00:28
Adapters from Yingfeng. #fiber #fttx #ftth #telecommunications #optical #telecom #adapter #patchcord
02:56
Video presentation of Yingfeng on Alibaba. # Ftth #fttx #fiber #optical #telecom #telecommunications