CNC Machining & Injection Molding — DFM/Moldflow Support, CMM Inspection, Prototype to Production Solutions.
Most RFQs quoted in 24–48 hours for typical parts. Clear terms, risk-controlled delivery, and documented inspection.
Upload your CAD and requirements, then confirm the quote and DFM notes. After approval, production begins with CTQ control and inspection as needed, followed by packaging and shipment with tracking information.
A 3D CAD file (STEP/IGES) plus drawings or key tolerances, material, finish, quantity, and required inspection documents. Clear CTQ notes help us quote faster and reduce revisions.
Lead time depends on process complexity, material availability, quantity, surface treatment, and inspection requirements. Tight tolerances or special documents (FAI/PPAP) can add verification steps.
Share 3D files, drawings/CTQs, material, finish, quantity, and your target timeline.
We confirm manufacturability, risks, inspection needs, and finalize terms for approval.
Controlled production with documentation, then safe packaging and tracked delivery.
Procurement-ready ordering: fast quoting, controlled risk, clear terms, and secure data handling—built for repeat orders and precision parts.
Most typical parts are quoted in 24–48 hours. Provide CAD + material + quantity + CTQs to shorten turnaround and reduce revision loops.
We align CTQ features before production and can provide documented verification such as CMM inspection and FAI when required—helping reduce surprises at delivery.
Inspection (CMM/FAI) → Quality system → Manufacturing videos →
Terms are written plainly—payment, Incoterms, quote validity, packaging expectations, and claims windows—so procurement can approve quickly and avoid delays.
Customer files are handled under NDA with restricted access and controlled sharing throughout quoting and production. If your program has specific compliance needs, we align them before file review.
Scan-friendly procurement details: required RFQ files, typical lead times & MOQs, clear terms, and change handling.
Focus keywords: RFQ file checklist, 3D STEP/IGES files, key dimensions & tolerances
Show CTQ callouts, datums, and tolerance blocks clearly to reduce quoting questions and align inspection.
Upload files for RFQ →Send a cleaner RFQ and get fewer questions — faster, more accurate pricing and lead time.
If files don’t match, we must pause to confirm “which version wins”.
Without CTQs and datums, inspection methods vary and risk grows.
“Anodize black” is not enough when cosmetic class matters.
Export packing, separation, and labels impact cost and lead time.
Tip: If you’re unsure, just upload what you have — we’ll reply with a short “missing items” list to complete the RFQ.
| Process | Lead time (days) | MOQ | Best for |
|---|---|---|---|
| 5-Axis CNC | 7–12 | 1 | Prototype / small batch |
| Swiss Lathe | 7–15 | 100 | Precision turned parts (volume) |
| Rapid Tooling | 12–20 | 50–100 | Injection molding prototypes |
| Injection Molding | 15–30 | 500+ | High-volume molding programs |
MOQ reflects setup economics and tooling effort. CNC can start at 1 piece, while molding requires tooling and stable run conditions.
Sometimes. Expediting depends on capacity, material availability, outside processes, and inspection requirements. Include your deadline in the RFQ.
T/T is common for prototypes and repeat programs. L/C can be supported for larger programs with formal banking controls. Terms are confirmed in the quote/PI.
Incoterms are aligned during PO/PI confirmation to match your logistics workflow. Share your preference in the RFQ to quote consistently.
Quote validity is stated on the quotation based on material and capacity. If timing changes, we can reconfirm price and lead time.
We review CTQs, inspection evidence (CMM/FAI if included), and measurement method to determine root cause and the next steps.
Send the revised CAD/drawing and list the change items. We pause at a safe checkpoint, review impact, and provide updated quote/lead time for approval.
From order receipt to project closure, SPI follows a clearly defined execution framework. Responsibilities, required documentation, and service-level targets are standardized to ensure traceability, risk control, and predictable delivery for CNC machining and molding projects.
| Stage | Owner(s) | Key Tasks | SLA |
|---|---|---|---|
| Order Receipt | Sales Representative | Log PO details, send order acknowledgement | ≤ 4 hours |
| Order Review | Sales Manager / Finance | Verify contract vs. PO, credit & risk check | ≤ 24 hours |
| Contract Signing | Legal / Finance / GM Office | Contract execution, pre-payment verification | ≤ 2 business days |
| ERP Entry | Production Planner | Create sales order, generate work orders | ≤ 4 hours |
| Technical Review (POC) | Engineer / Production Supervisor | Finalize process route, confirm materials | ≤ 24 hours |
| Material & Subcontract | Materials Control | Issue requisitions, track readiness | ≤ 1 business day |
| Production Execution | Production Supervisor / Shop | Dispatch jobs, monitor IPQC | Per production plan |
| Exception Handling | Production Supervisor / QC | Issue exception report, hold emergency review | ≤ 2 hours after issue |
| Order Closure | Production Planner | Update ERP status, archive records | ≤ 4 hours |
| Project Review | Entire Project Team | Review outcomes, document lessons learned | ≤ 5 business days |
| Document Name | Origin / Prepared By | Purpose | Retention |
|---|---|---|---|
| Customer Purchase Order (PO) | Customer / Sales | Order authorization | 5 years |
| Contract & Addenda | Legal / Sales | Price & terms confirmation | 5 years |
| Pre-payment Voucher / L/C Notice | Finance | Payment verification | 5 years |
| Order Acknowledgement | Sales | Customer confirmation | 3 years |
| Production Feasibility Review | Engineering / Production | Process & material validation | 3 years |
| Production Work Order | ERP / Production | Shop-floor execution | 3 years |
| Subcontract Work Order | Materials Control | Subcontract follow-up | 3 years |
| Final Inspection Report | Quality | Quality release | Indefinite |
| Project Review Report | Project Team | Continuous improvement | 3 years |
| Process Stage | Input → Output | Target SLA | Notes |
|---|---|---|---|
| Order Receipt | Customer PO → Acknowledgement | ≤ 4 hours | Business hours only |
| Order Review | Acknowledgement → Review Form | ≤ 24 hours | — |
| Contract Signing | Review Form → Signed Contract | ≤ 2 business days | Legal & management parallel run |
| ERP Entry | Signed Contract → Sales Order | ≤ 4 hours | — |
| Technical Review | ERP Order → POC Form | ≤ 24 hours | Up to 48h for large projects |
| Material & Subcontract | POC → Requisition / Work Order | ≤ 1 business day | — |
| Production Release | Materials Ready → Job Dispatch | Per weekly plan | — |
| Exception Handling | Issue → Report / Approval | ≤ 2 hours | Immediate escalation for critical issues |
| Order Closure | Production Complete → Archive | ≤ 4 hours | — |
| Project Review | Delivery → Review Report | ≤ 5 business days | Mandatory for large orders |
Partner with SPI
Welcome to SPI — an ISO9001/IATF16949-focused CNC machining and injection molding partner in Dongguan, China.
We combine tight-tolerance machining, documented inspection and responsive engineering support to help you move from RFQ to stable production faster, with full traceability and audit-ready quality records.
Share your drawings and requirements — our engineers can suggest practical tolerances, surface finishes and inspection plans before you lock your RFQ.
Use the Contact Us form to upload STEP/IGES files and add notes about tolerances, surface finish and inspection.
Prefer email? Reach us via the form on the Contact Us page and ask to be added to our CNC DFM mailing list.
