JDA is a professional BOS (Balance of System) supplier and system integrator,has successfully completed TUV ISO 9001: 2008 certification. JDA delivers all kinds of BOS components including Surge protector, DC disconnect switch, String measuring unit stringMoni®, PV array smart combiner box pvBos®, Max. power point tracker MPPGUARD®,Automatic solar tracker controller, PV Fuse and holder, IP 67 Enclosure (Water, Dust-proof, salt-fog, Ammonia resistant, Weather resistance), Pyranometer, Temperature sensor and transmitter, Wind speed and direction meter, Fire DC fuse, Arc fault detector, String inverter, Central inverter, etc. All components meet international safety standard, such as UL、CSA、KEMA、cETLus、TUV、BDEW、AS、CCC, etc. JDA provides PV monitoring system with string address and maintenance functions that have advantage of increasing power generating efficiency, preventing PID (Potential induced degration), shortening payback time, extending service life and ensuring safety.