| Stage | Process | What Is Inspected | Standards Applied |
| 1 | IQC — Incoming Quality Control | Raw material hardness, elasticity, color accuracy, chemical composition. Every silicone batch is tested before entering production. | Internal specification sheets + SGS/Intertek material test reports |
| 2 | IPQC — In-Process Quality Control | Dimensional accuracy, mold flash, surface finish, weight consistency, color uniformity — checked at every major production step. | ISO 9001 process audit + customer-provided specifications |
| 3 | FQC — Final Quality Control | 100% visual inspection of finished goods. Pull-force testing, leakage testing, logo alignment, packaging conformance. | AQL 2.5 sampling standard + customer inspection criteria |
| 4 | Pre-Shipment Inspection | Independent third-party inspection of packed cartons, quantity verification, labeling, compliance documentation, and carton drop test. | SGS, Intertek, or Bureau Veritas (buyer's choice) |