ZTZ industrial company limited is located in Ningbo, Zhejiang of China, with more than ten years' experience of producing professional speakers, and accepted by more and more dealers, enjoying a very good reputation international in the circle. Our company is a trusted OEM and exporter. We qualify to research the speakers that you provide, and we also are professional trader.

  Three years ago, we began to research the car digital amplifier (class D), and introduce the advanced technology from Korea and Japan. Now, there have been great advances in technology and our annual value increased year after year. Most of the products are exported to the North and South America and Europe.

  At the same time, we export many kinds of relative accessories, which range covers EQ, diaphragm of driver, fuse and its holder, voice coil, capacitor, terminal, power cable and so on. 

  We follow the principle "quality first, credit highest", and get more and more orders. We believe our company will become stronger after cooperate with you and your company.