As a stationery product frequently used by students every day, its product quality directly affects their physical health.

Switching power supply, switching power supply, switching converter, power switch button, 12v power supply, 24v power supply, mobile power supply

Polyester spinning oil, anti-splash polyester DTY oil, nylon spinning oil, acrylic spinning oil

Chrysler, Ford and General Motors are working to establish a common set of parts qualification and quality system standards

Test products: sweeping machine, mopping robot, electric mop, electric broom

Test products: curling irons, hair dryers, hair dryers, curling combs, electric hot combs, hair clips, hair stylers...

The test is based on the "Highway Tunnel Ventilation and Lighting Design Specifications" JTJ026·1-1999 "Highway Tunnel Design Specifications"...

Currently, the lamps exported to Europe and the United States are mainly LED products. When it comes to LED standards, Chinese manufacturers...