Enterprises in industrial parks use LJIP Customer to receive service fee notices: electricity bill notices, water bill notices, wastewater treatment fee notices, garbage treatment fee notices, payment notices. Public utility usage fees, factory rental fee notices, gas pipeline rental fee notices. At the same time, businesses can manage and look up the history of used services (electricity, clean water, wastewater, garbage, public utilities, factory rental, gas pipeline rental), contracts, and send feedback. Report to the Industrial Park Management Board.