1. Strict production and quality control;
2. Fast delivery time.
3. Provide product specifications and detailed test reports before shipment;
4. Three-year warranty, one year free maintenance; (Note: 1. If the damage caused by improper handling/use, the warranty is invalid 2. If the serial number of the label SN is torn off, broken, the warranty is invalid 3. If the product is User disassembly, invalid warranty)
5. Respond to customer's quality problem notification within 24 hours
6. Regular surveys, collecting customer usage and sales, and recommending products based on market conditions.