Earth Magnets has set strict quality assurance system. For the high quality, specialized service team and management system adhere strictly to the ISO 9002 standard.

The main testing process include:
1. Raw material testing: the composition of each kind of raw material.
2. Magnetic powder testing: the content of oxygen and the analysis of average granularity.
3. Blank testing: the content of oxygen and the dimension.
4. Semi-finished product testing: the content of oxygen, the density, and the tolerance of dimension, magnet properties and crystal grain.
5. Plating test: the thickness of layer and salt fog spray test.