1. High-low temperature test
The product is heated to 40℃ for five hours and then cooled to -20℃ for five hours. Then, we test the performance of the scale for accuracy.

2. High-voltage insulation test
At AC 1500V, we test the product's leakage current to measure its insulation performance.

3. Components performance test

4. Durability test
In simulated usage environments, we perform durability test with product to know whether product accords with the times of requirement usage.

5. Measurement test
In the range from minimum weighing value to maximum value, we use a variety of weights to perform the product measurement accuracy test. Qualified products measure within the allotted error range, which is kept to a minimum.

6. Constant temperature and humidity test
We test the product's performance in at 40℃, 80%Rh and -20 ℃, 40%Rh respectively.