Ningbo Ning variable power Polytron Technologies Inc formerly known as the Ningbo high tech Zone Ning variable power equipment Co., Ltd., by the Ningbo Ning become shareholders Electric Co. Ltd. was initiated, is located in Ningbo high tech Zone Jinghua Road No. 168. The company is one of the main suppliers for domestic large motor starting, domestic and foreign dry starting autotransformer, starting reactor production, R & D leader. The company has been rated as Ningbo city science and technology enterprises, innovation demonstration enterprises, high-tech enterprises, and through the ISO9001 quality management system certification.