... and easy for operation.2.Can welding the ear-loops for disposable masks, inner/outside ear-loop masks, cup masks, duckbill masks and ... other special-shaped masks.3.After finished the mask blank, then start to weld the ear-loop with manual, easy for operation, and ... quality spares, smart design which makes the operation much more convenient, mainly used to the ear-loop welding for N95 masks such as ...