100, Des Voeux Road C, 2 / F, Central, H. K.

Royal audio lab is well-established audio factory integrating R& D, manufacturing, marketing. We supply the following products: Audio, speaker, amplifier, power amplfiier, PA amplifier, PA spe...

Guangzhou Chaomai Electronic Technology Co., Ltd., formally established in 2002, is a high-tech industrial enterprise with R&D, production, sales, and service. The head office is located in Gu...