Antecedents: Royal Castor Products Limited, promoted By the Standard Greases Group, the largest Grease manufacturer in the private sector In India & Patel Group, conglomerate with a strong base in the construction and manufacturing industries promoted in 1995 has now become a name that is identified with quality in the castor oil derivatives world over. Strengths & progress: A state of the art in-house R & D centre and a large modern plant, manned by technicians with vast expertise, ...