Short description:

Built-in heating element

When a strong element is wound, the current is not enough to damage the heating element, but the built-in heating element solves this problem

The problem is that the heating element burns out due to poor contact.

Longer heating element life

Use a cotton swab to clean the photosensitive material to avoid dust covering and reducing the sensitivity.

spring

The internal spring of the heating element has good thermal conductivity and is not easy to damage the heating element