Features:
1.  excellent Operability, easy to carry.
2 flux can be repeated to add
3 Flux stop evaporation, keeping the proportion  stable
4. Appropriate adjustment mechanism to prevent the solder solder flow drip
5. Full of alcohol can be used for cleaning brushes.
6 pen body transparent, clear margin

Uses:
1. Before welding, flux coated on the base metal (to improve infiltration)
2 by the object when the object to the amendment applied flux, oxidation can remove wax and improve infiltration.
3. Alcohol and other solvents to clean the substrate (prohibiting the use of organic solvents)