Quality Assurance

In the development, production, North Sound has always followed the principle of product "quality first, efficiency first." Strict compliance with the relevant national and world production and industrial product standards.

1. The company has passed ISO9001: 2008 international quality management system, the product complies with ROHS environmental requirements.
2. Continuous improvement 7S management, field operations to achieve clean, orderly and efficient, to show the company's modern management style, has won widespread recognition.
3. All products meet national industry standards and relevant national standards: UL1480 standards such as the US security, audio speakers JISC5532 Japanese standards. Product performance guarantees more than seven years. Product-dependent test to reach 100--500 hours.
4. Strict quality inspection system: FO test, 100% pure tone detection, sensitivity testing, high temperature testing, experimental testing power.
5. North Sound has always been the quality of health horn.

Instruments photo

Product Test between high and low impact machine 高低温冲击机

Workshop

Computer-controlled three-dimensional positioning dispenser

Quality Certificate

Customer feedback Product Quality Report

Product development and testing

Department of quality testing equipment

Detection equipment must annually through the national technical correction mechanism to detect and measure the certificate issued