Silverstone Rubber India continues to expand its operation by the recent acquisition of a TSR factory in north of Kerala, India. This factory will be involved in manufacturing specialty rubbers. Specialty Rubber factory will upgrade the existing machinery and the lab to manufacture the following grades: ISNR CV 60 ISNR 10CV 60 ISNR 20CV 60 ISNR 5L RSS 1 X All the above grades will be marketed both nationally and internationally, conforming to customer requirements.   Silverstone is a producer of technically specified rubber under wet and dry process using field coagulum, cup lumps and unsmoked sheet rubber.  The grades mainly produced are TSR 10  & 20. Silverstone produces around   9000 tonnes of TSR per annum which is about  15% of the total TSR grades produced  in India as in 2004/05.   Silverstone Rubber India is a technically specified rubber processing unit located in a rubber estate in Vithura, about 40Kms from Trivandrum the capital of Kerala state, India. Its a privately owned company with over 100 years of experience in rubber plantations.   Silverstone Rubber India is approred by most of Indian Tyre giants like Good Year,Bridgestone, MRF, Apollo, Birla, JK Tyres.