[Hotfix Rhinestones] Actually, It Also Contains Lead

Many people don't know that the hot drill actually contains lead, but don't worry, it won't do harm to our health. In fact, the lead content of hot drill can directly affect the hardness of the drill, and if the hardness is high, it can solve the problem of sharp cutting edges and corners. Secondly, the lead content can also determine the brightness of the drill, but this does not mean that the higher the lead content, the better. Generally speaking, when the lead content exceeds 30%, the brightness of the drill is better than the price. And if the lead content is too high, then it has a great impact on its use. For example, many places have very strict regulations on import and export. If the lead content is too high, then it can not be imported and exported. It is also harmful to the user's health. Therefore, the lead content of hot drills needs manufacturers. To adjust.