aerial joint

knotted joint

duplex cross tap joint

double cross tap joint

To improve tensile strength

To improve resistivity

To improve ductility

To improve conductivity

It cleans the surface to be soldered

It lowers the melting point of the solder

It makes the flow of solder in the joint easy

It does all the above

Zinc chloride

Hydrochloric acid

Sal ammonia rosin

Rosin

solder

soldering bit

bonding agent

soldering flux