What is the replacement cycle for various filters and consumables?

Qi Qin equipment consumables replacement cycle (based on standard water quality and conventional usage): PP cotton filter cartridge 3-6 months; Activated carbon filter cartridge for 6-12 months; RO reverse osmosis membrane for 1-3 years (depending on the inlet water quality and water consumption); UV lamp tube 8000-10000 hours (approximately 1 year); EDI module 8-10 years; Terminal filter takes 1-3 months; Breather filter cartridge 3-6 months. The specific information shall be based on equipment alarms and actual monitoring data.