... 90SF,93SF,95SF,97SF 20Kg Carton or Drum Vitamin C Ascorbic Acid DC granule(90%,93%,95%,97%) ... resistance to response and relieve the toxicity of body's metal ion. Good stability:resistance to high temperature ... together with other feed not to affect the product's performance, to reduce culture cost and improve culture rate ... ]In-house Standard Ascorbic Acid DC Vitamin C Granule 90SF,93SF,95SF,97SF