🇬🇧 Original document is in Vietnamese
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Thông tư20/2019/TT-BTTTT· 31/12/2019
Circular - Vietnam (2019)
🇻🇳 Original: Ban hành \"Quy chuẩn kỹ thuật quốc gia về lắp đặt mạng cáp ngoại vi viễn thông\
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Vietnamese-language original. Use browser translation if needed.