Compare Solar Panel Manufacturers: Roy Solar vs SunPerfect Solar

Website:

http://www.roysolar.com

Country:

China

Address:

101, No. 47, Block 175, Hong Song Road, Shanghai

Website:

http://www.sunperfect.com

Country:

United States

Address:

Silicon Valley Center, 2570 N. First Street, Suite 234, San Jose, CA 95131