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Hệ thống Khử trùng bằng Tia Cực tím (UV): Hướng dẫn vận hành

Gravity Water is hiring

Gravity Water Turns Rain into Safe Water for Schools in Need.

Gravity Water is registered as a 501(c)(3) nonprofit organization in the U.S. (FEIN: 81-1802377), an International NGO in Vietnam (No: 508/CNV-HD), and a community-based NGO in Nepal (No: 1064)

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