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Metallic batteries are critical components of many modern technologies, including electric vehicles, consumer electronics, and renewable energy storage systems. The performance and lifespan of these batteries depend significantly on the cleanliness of the

Discovering black particles floating in the water or a dark film on your items after ultrasonic cleaning can be alarming. Is your jewelry ruined? Is the machine faulty? In most cases, this "blackening" is a normal—even positive—indicator of the 

In the process of screen printing, the solar cell is easy to produce abnormal printing because of the equipment and screen plate, which will result in some defective printing products, the defects such as incomplete front and back-field graphics, aluminum