Potash Ore produced from rock salt (Rock salt) found on the ground the northeastern Chaiyaphum, Maha Sarakham, Yasothon, Ubon Ratchathani and Udon Thani to produce rock salt from rock salt in general. Use the scientific process is used to melt filtration, evaporation and crystallization or melting and crystallization. Depending on the condition of the salt that occurs in other sources.
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