Hangzhou Upturn Electronics Factory is located in Hangzhou City, Zhejiang Province of China. Our factory is near to Shanghai and Ningbo. It is around 220KMS far from Shanghai or Ningbo, we enjoy convenient transportation! We specialize in the Developing, Producing, and Selling of various kinds of Audio Products like Tweeters, Woofers, Car Speakers, Speaker Boxes, Column Speakers, Sirens, Driver Units, Ceiling Speakers, Wall Speakers and Megaphones etc. We have more than 20 years of experience in this field.We have strong technical force and production capacity. We offer OEM & ODM services for Audio Products according to the requirements of our customers. "Customer is God, Quality First, and Keep Promise" is the invariable service aim and the management concept of our factory. We are looking forward to building great cooperation with you!