Bluetooth speaker mainboards and home theatre mainboards are our primary focus. We provide high-quality audio boards and converters without sacrificing any of their features. To assemble PCBs, we use completely automated machinery. Apextronic makes no sacrifices when it comes to the quality of its products. We put forth a lot of effort to provide our consumers with high-quality audio services. Every part of circuit board production is updated and improved on a regular basis. Our Bluetooth speaker mainboards have a wide range of quality. The module is very easy to connect with the Bluetooth speaker and battery. This module has an integrated Micro-USB linked battery that can be charged while playing music. It also has a number of other features, and variety, which is described below.