Randomly inspecting toxic substances in the Kok River

Chiang Mai Environmental and Pollution Control Office 1 found arsenic in the Kok River in Mae Ai District, Chiang Mai Province, more than double the standard level after receiving complaints from locals that the water was unusually turbid, and there were concerns that it could be linked to mining in the headwaters of a neighboring country. สล็อตเว็บตรง