Guangzhou Yaming Audio Equipment Factory, located in Guangzhou city, China, covers nearly 100, 000 square owning electro-acoustic research and development centers, carpentry workshop, assembly workshop, module workshop, hardware workshop. It is specialized in developing, designing, producing and selling professional audios, amplifiers, and accessories. With the guarantee of advanced technology, strict quality control and perfect system management, our two brands products VALTEC-TUBESOUND and TANNSO researched and designed by ourselves have obtained a large number of customers' belief and support.