Is this a notice on a parking lot? If so, I assume 不设保管服务 means “not responsible for lost items. 保管 means keep, secure... (depending on the context) 3. Follow instructions from the staff, be civilized, keep safe. 4. Parking fee standard by city’s commodity price department: $5 for over 26 seats or 3 tons.

Thanks

1) keep some private stuff for safe in a short time 2) Sorry I can't translate so well. But I'll try to explain. It's like, when you go to a supermarket, and you need to keep some baggage, but they don't allowed- don't have this service. Don't have keeping service. Maybe... 3) listen to the staff in the parking lot, civilized courtesy, safe access. 4) Market Price Departments approved fee standards: 5¥ pre 26 seats pre 3 ton. These are real big challenges for me, wish I can help you.