Sumitomo Type 39 is a product designed for the purpose of competing with Fujikura FSM-60S is an innovative product Sumitomo type 37,
Welding optical Sumitomo Type 39 is rated as good quality and reasonable price. But this product has disadvantages are difficult to use, users need to be trained in depth, the interface is not friendly, black and white screen resolution surveillance camera less, the battery is love - Article This is very uncomfortable for people to do works.