Guangzhou Sinojoint is a foreign enterprise which has been set up in August 2007 with total 4500sqm. The business scope is to develop and manufacture Professional Audio and provide OEM and ODM service.The products ranges are separated into three categories which are MI system, Background music and Recording system. Sinojoint has more than 100 employees and 11pcs AP equipment testing. All products are 100% undergo AP testing and sound testing.Making best quality products are the key of Sinojoint