355nm UV laser marks cell phone shell logo and pattern in 0.02mm high precision   The non-contact processing on the switch socket panel through ultraviolet laser technology, the LOGO is clear and durable, and plays a good anti-counterfeiting effect. Don't worry about getting blurred due to excessive touch. Now the brand is almost UV-marked LOGO. If the LOGO on the panel is easily erased, you need to pay attention to whether it is a fake.