1. Hotline technical support: 400-870-9988 professional answers provided by our engineers;

2. On site technical support: provide 7 * 24-hour quick on-site service telephone, quick response service within 0.5 hours; during the warranty period, we will send a special person to be responsible for free maintenance; in case of equipment failure, we will respond within 0.5 hours, send professional technical personnel to the site for maintenance within 2 hours, and solve the problem within 12 hours. If the fault cannot be eliminated within 12 hours, the spare products of the same grade will be provided for the purchaser's use, and all expenses incurred shall be borne by our company.