When we were on our way, the trolley box suddenly appeared. What should we do?

You may not know all about the trolley case when you use it often. The trolley case can be carried by hand or dragged on the ground. With the changes of the times, our trolley case has also changed greatly. In the past, the function of the trolley case was very limited, but now the trolley case is unrestricted. It is very useful in many places. Now we are in the airport Subway, and railway stations and other places have special Trolley Case lanes to let us get on or board easily. But when we were on our way, the trolley box suddenly appeared. What should I do? Now let's introduce the common faults and troubleshooting of the lower link box.
There are three common faults in the trolley case:

1、 Unsmooth zipper: apply candle or leather wax on the zipper to improve the effect.

2、 Anti nitrate: if there is a little anti nitrate, color matching leather paste can be used to supplement the color or white electric oil can be used to gently wipe the anti nitrate part to remove the stains.

3、 Metal decoration and oxidation (gold, silver, copper buckle) silver hardware BUCKLE: the black spots can be gently wiped off with the finest water sanding paper or sanding rubber, and then gently wiped with transparent leather ointment.

Trolley box inspection

Note: the golden buckle must not use sandpaper to avoid wiping off the gold. Only use a little transparent leather ointment to wipe it gently.