Longjoin four products were identified as high-tech products of Guangdong Province.
  They are listed as follows:
1. Loudspeaker;
2. Keyboard;
3. Digital mixer;
4. Audio controller.
我司四项产品被认定为广东省高新技术产品
我司四项产品被认定为广东省高新技术产品
我司四项产品被认定为广东省高新技术产品
我司四项产品被认定为广东省高新技术产品