PCBA: S-company PCB length and thickness are smaller than Celxpert;Layout and Coating: S-company PCB is single-sided layout and coating, the process is simpler than Celxpert. Welding: S-company no need to welding thermistor and short point, the process is simpler than Celxpert. Dispensing: S-company thermistor and short point no need to fixed glue , but the amount of thermal conductive glue and tape is twice than Celxpert.4.Acetate cloth covering area is larger than Celxpert , It is more expensive than Celxpert .: Hand-made is slower than hot-bar.