HYDERABAD: Goldstone Teleservices Ltd., a Hyderabad-based telecom accessories and power distribution products manufacturer, has received an order for 3,000 pieces of polymer insulators of 25 KV to be deployed in Indian railways replacing porcelain insulators. The company has also received orders for two lakh pieces of 11 KV polymer insulators to be installed in power distribution companies of Madhya Pradesh and Rajasthan State Electricity Boards and Transmission Corporation of Andhra Pradesh. The total value of the orders is in excess of Rs. 6.5 crore and the company is planning to start supply of polymer insulators in international markets from June.