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Concrete Air Entrainment Meter TBTCEM-615A
Contact person: Ms. Toni Gu 
toni_gu@tbt-scietech.com sales@tbt-scietech.com
0086-25-8472 1577 / 8472 1579 / 8472 1907
Mobile / WhatsApp: 0086-138 5170 2127
0086-25-8472 2235
Rm. 2903-2904 HuaXia Mansion, No. 81 ZhongShan Rd.,
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