Metalcess’ self-developed fluoride removal agent, utilizing a porous hydroxyl-functionalized composite carrier with an adsorption capacity of 8.5–12mg/g, can reliably reduce fluoride from 50~500mg/L to below 1mg/L, achieving an efficiency improvement of over 30% and facilitating compliance with discharge standards such as GB 8978-1996. This fluoride removal agent is resistant to high salinity (Cl-, SO₄2-≤ 5000mg/L) and interference from low-concentration heavy metals, can be used in hydrometallurgy (leaching solution purification, electrolyte purification and son on), wastewater treatment, and drinking water industry.