ROYAL CASTOR PRODUCTS LTD. Address: Post Box No. 28, Sidhpur-384 151, Dist. Patan, Gujarat, India Contact Person: Manufacturer of Various Oleo-Chemicals and Lubricating Oil Additives : Castor Oil (All Grade), T.R.O. (35%/50%/70%), Hydrogenated Castor Oil, 12-Hydroxy Stearic Acid, Ricinoleic Acid, Blown Castor Oil, Methyl Ester (Bio Diesel), Sulfurised Karanjia Oil, Sodium Petroleum Sulfonate (SPS), Overbased Calcium Sulfonate (300-400 TBN), Barium Sulfonate, Magnesium Sulfonate