Understand the water. Then design the system.

Water quality can vary substantially by source and season. The description “Yunnan highlands” alone cannot establish hardness, iron, manganese, or turbidity. Check actual water quality reports, temperature, altitude, and site conditions during selection so that designers can confirm process and equipment requirements.

Compare water quality and operating-condition analysis, verifiable supply documents, actual project records, acceptance methods, and after-sales responsibilities. Tell suppliers the specific Yunnan location, raw-water conditions, and intended use before comparing complete proposals. Do not decide solely on brand claims or a single specification.

First investigate the water source and supply conditions. Determine process, disinfection, and operating management requirements against test results, applicable standards, and supply scale. Equipment configuration is only part of supply management. Confirm outcomes through agreed testing and acceptance, and maintain ongoing management as required.

Replacement intervals depend on raw water, usage, equipment configuration, and maintenance. Use the relevant instructions, inspections, and operating records to determine timing. Before purchasing, check the model, material requirements, and intended use. A fixed number of months is not a universal service life for all cartridges, filter media, or membrane elements.

Submit the project location, site conditions, and service requirements for confirmation. Agree the scope, fees, and timing of surveys, installation, commissioning, and maintenance in writing before service begins. For projects away from our base, also confirm travel and staffing conditions.

Altitude and water temperature can affect some equipment operating conditions, but water quality must still be assessed against the specific source and test results. Regions, geological conditions, and seasons within Yunnan can differ. It is inappropriate to describe every highland source as having high hardness, iron, or manganese. State the actual operating conditions in the proposal.