Quality is the core competitiveness of Haitai. Under the increasingly harsh cost competition environment, Haitai always insists on using top reliable materials, intelligent and advanced manufacturing process to produce high quality PV modules. The automatic process inspection includes multiple steps such as string welding, stack welding, pre-layer EL/appearance, post-layer appearance, junction box welding, final EL inspection/appearance, etc. Through automatic and standardized inspection, we ensure that the products are of the same quality from start to finish.