Established in 2011, Ningbo Joiwo explosion-proof technology & science co., Ltd is a manufacturer and trader. Specialized in the sales,research, development, injection process and production of industrial telephone set，such as anti-explosion telephoen set, waterproof telephone set,Noise-cancelling telephone set Mine telephone set and kinds of public address,injection box .We are located in yuyao with convenient transportation access from ningbo air port within 1 hour by car . and it covers 4500 S.q.m. All of our products comply with international quality standards and are greatly appreicated in variety of different markets throughout the world. If you are interested in any of our products or would like to discuss a custom order.Please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the future.