To do quality control, we basically have 4 procedures:

1. Learn and clarify related national and industrial standard;
2. Do trainings to workers irregularly to help them learn, understand and perform the quality standard in production;
3. Check the equipment regularly to make sure they works normally;
4. Make random inspection among bulk finished products.

Moreover, we also have a complete post-sale service. If there is a quality problem after delivery, proved to be caused during production, customers will get due compensation.