What if the pins of electronic components don't stick to tin?

Then you can only clean the pins with fine sandpaper first, and then use some solder paste, which is easy to tin. The residual solder oil after tin plating must be wiped clean, otherwise it will easily corrode the pins. Not suitable for "long time welding". Electronic components are afraid of high temperature and should not be soldered for a long time.

Where can I open double eyelids in Shanghai? Good effect and affordable price.

How can women make men love themselves more?

Can regular tooth washing really make teeth thinner and thinner?

How to maintain after cutting double eyelids?

After liposuction in plastic surgery hospital

South Korea plastic surgery South Korea Chen Yuan plastic liposuction needle will rebound?

Advantages of China Plastic Surgery Network

What tests do orthodontics need to do?

Is artificial dermal flap used to pad the tip of nose?

There are two ways to generate a square wave with a frequency of 10KHz (circuit and working principle are required).