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GRG Metrology & Test Group Co., Ltd.

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No. 163, Pingyun Road, Huangpu Avenue-West, Tianhe District, Guangzhou City

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Muag: +86-17675756728

Teev

Monday-Friday: 9 teev sawv ntxov txog 6 teev tsaus ntuj

Hnub Saturday, Hnub Sunday: Kaw

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