This is a retrofit project was performed in Tarzana, CA. The customer was greatly troubled by their existing lights which were consuming huge amount of electricity while giving poor lighting. They had to spend a lot on regular maintenance as well. However, with our accurate calculation and simulation, unique design, and strictly-controlled manufacturing, they were able to fully solve all the problems in a short period of time.Our All-in-One Series solar lights successfully replaced the old fixtures and kept the existing poles. Greenshine-solar was able to help the customer resolve the problems of dim light and waste of energy while largely reducing installation and maintenance costs.