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• chemicals used to purify water
• water purification chemicals
• chlorine tablets for water purification
• chlorine for water purification
• calcium hypochlorite water purification
• chlorine drops for water purification
• chlorine to purify water
• water purification with bleach
• chemical used for purification of water
• two chemicals used to purify water
• iodine crystals for water purification
• chlorine drops to purify water
• using chlorine to purify water
• sodium hypochlorite for water purification
• chlorine purification
• hydrogen peroxide purification
• chlorine used for water purification
• bleach for drinking water purification
• organic fertilizer raw material
• microbial organic fertilizer
• 99% ammonium chloride
• ammonium chloride manufacturer