Kufichua Siri: Zhang Yuan, mhandisi baada ya mauzo katika HANGZHOU IECHO SCIENCE & TECHNOLOGY CO., LTD. Je, alifaulu vipi kusakinisha TK4S ya CutworxUSA mnamo Oktoba 16, 2023? Hamjambo nyote, leo IECHO itafichua mtu asiyeeleweka - Zhang Yuan, ng'ambo baada ya...
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