Our firm since its inception, normally regards item top quality as company life, constantly make improvements to generation technology, improve product excellent and repeatedly strengthen organization total good quality management, in strict accordance with the national standard ISO 9001:2000 for 4ohm pp cone coaxial speaker
Because we stay with this line about 10 years. We got most effective suppliers support on excellent and cost. And we had weed out suppliers with poor high quality. Now several OEM factories cooperated with us too.