| 1. Project Brief | Review target market, product category, installation requirements, price positioning, and expected order volume. | Reference images, technical requirements, market standards, target cost, and forecast quantity. | Project specification sheet and preliminary feasibility assessment. | 2–5 business days | Requirement completeness, regulatory scope, and manufacturability review. |
| 2. Concept Design | Develop form, proportions, handle configuration, spout geometry, mounting method, and functional layout. | Design direction, preferred style, dimensions, user requirements, and installation constraints. | Concept sketches, 3D renderings, dimensional proposal, and design review notes. | 5–10 business days | Ergonomics, clearance, water-flow path, and compatibility with intended installation. |
| 3. Engineering Development | Convert approved concepts into production drawings, component specifications, tolerances, and bill of materials. | Approved design, connection standards, packaging requirements, and compliance targets. | 2D drawings, 3D files, material list, tolerance plan, and engineering change record. | 7–15 business days | Thread compatibility, dimensional tolerance, sealing structure, and serviceability. |
| 4. Material Selection | Select suitable body materials, cartridges, aerators, seals, hoses, fasteners, and surface-treatment systems. | Required water conditions, local regulations, finish preference, durability expectations, and budget. | Material declaration, component specification, finish sample, and approved reference standard. | 3–7 business days | Corrosion resistance, material traceability, component compatibility, and finish consistency. |
| 5. Prototype Sampling | Produce a functional sample or appearance prototype for dimensional, visual, and installation evaluation. | Sample quantity, finish approval method, test criteria, and shipping information. | Prototype unit, inspection report, sample photographs, and revision list. | 15–30 business days | Fit and function, leakage inspection, appearance, dimensions, and assembly evaluation. |
| 6. Testing and Approval | Conduct performance checks and incorporate approved changes before mass-production release. | Approval comments, applicable market standards, and final acceptance criteria. | Test records, corrective-action report, signed sample approval, and production release document. | 5–15 business days | Pressure and leakage testing, cartridge operation, flow performance, finish inspection, and assembly strength. |
| 7. Tooling and Pilot Run | Prepare molds, fixtures, process instructions, inspection gauges, and a limited pilot production batch. | Approved drawings, order quantity, packaging artwork, and production schedule. | Tooling confirmation, pilot samples, process control plan, and packaging sample. | 20–45 business days | First-article inspection, process capability review, assembly repeatability, and packaging protection. |
| 8. Mass Production | Manufacture, machine, polish, plate or coat, assemble, test, label, and pack approved products. | Confirmed purchase order, delivery terms, inspection plan, and shipping documentation requirements. | Finished goods, batch records, inspection reports, packing list, and commercial documents. | 30–60 business days | Incoming material inspection, in-process checks, 100% functional testing where specified, and final sampling inspection. |
| 9. Pre-Shipment and After-Sales | Complete final inspection, export packing, shipment coordination, spare-parts planning, and technical support. | Inspection appointment, shipping instructions, destination requirements, and service policy. | Pre-shipment inspection result, installation guide, spare-parts list, and warranty-support procedure. | 3–10 business days | Quantity verification, carton marking, packaging integrity, document accuracy, and random product inspection. |