Sefrema

1. Overview

• SEFREMA (Sea Fresh Magnesia) is a product which refreshes polluted sea, and is utilized for the prevention of red tide caused by negative nutritionization of sea shore area and the purification of polluted deposits caused by long use of farming fishing ground.

2. Characteristics

• As the product uses hydrated magnesium [Mg(OH)2] as raw material manufactured from sea water by ion exchange method, it is environment-friendly product which does not contain cancerogenic substance and heavy metals.
  
• Purity is more than 96% and has very little impurities, and very little sludge is produced.

3. Effect

• More than 90% of harmful red tide (Cochlodinium) is eliminated within 60 minutes after input and has no harm to farming living things.
  
• Water quality and deposits of breeding ground are changed to alkali and decomposition of organic substances is promoted for the prevention of disease.
  
• Generation of hydrogen sulfide is prevented and ammonia is eliminated to prevent perishing of farming living things.
  
• Dissolved oxygen increase effect through elimination of oxygen consumption factors such as oxidization of organic substances, increase of sulfate resolution germs and mass development of seaweeds.

4. Usage

• Elimination and prevention of red tide and greed tide.
  
• Improvement of deposits in farming fishing ground and purification of water quality (Gadoori, water tank on land type, shrimp, Scapharca broughtonii and oyster).
  
• Prevention of diseases of fishes, shells and Crustacea.
  
• Prevention of hydrogen sulfide after dredging of polluted deposits in inland harbor and harbor.
  
• Improvement of deposits and purification of water quality in inland farming ground.

5. Product Type

• Mixed type (MIX-5, less than 5mm / MIX-15, less than 15mm) : Vinyl container in 20kg
  
• Powder (Less than 0.045mm) : Vinyl container in 10kg
  
• Liquid (Solid powder with density of 20∼35%) : Tank lorry vehicle transportation
  
• Almond type (15 x 25mm) : Vinyl container in 20kg