front desk: 1. Username registration 2. System advantage management, announcement news management, contact us management 3. After different users register and pass the administrator's review, they can log in to their own area to check the latest information and prices.
Backend: 1. Add materials individually 2.Category addition 3. Front desk settings 4. Query settings 5. Comprehensive version query 6. Inquiry of business version 7.Excel import 8.User management 9. Modify administrator password
