Introduction of products of Hangzhou Hongda Electrical Power Tower Manufacturing Co., Ltd.: In 1991, the experts from State Electrical Power Plan Institute, Zhejiang Electrical Power Design Institute and Xin’anjiang Concrete Product Factory worked together with technicians of our company and developed J series tower for electrical transmission and transformation with thin centrifugal steel tube and concrete structure. All the customers are satisfied with the performance of the products when they are used in construction of the first 110 KV double-loop electrical transmission line of Kunming Electrical Power Bureau, 220 KV line and 110 KV line of out-door distribution equipments at Xiaoshan Power Plant, and high tower of 230 KV 130 m span line in Wenzhou etc. The product was approved with a network access license by the state product quality testing center in 1993. Now our company has installed production lines with annual production capability of over 2000 tons, and our products are sold well in many cities in Zhejiang and other neighboring provinces. Our company produces the products according to the standards of the state electrical power institution, and we always keep our promises and produce products of good quality in time. Whenever our customers have difficulties in installation, we can send out technicians to the working site to assist the customers and make sure that our customers are satisfied.