An injection mold RFQ that omits resin grade, annual volume or steel life forces factories to guess—and your “cheapest” quote may be a short-life tool that fails mid-program. This checklist helps OEM buyers solicit comparable quotes from China mold manufacturers.
An injection mold RFQ that omits resin grade, annual volume or steel life forces factories to guess—and your “cheapest” quote may be a short-life tool that fails mid-program. This checklist helps OEM buyers solicit comparable quotes from China mold manufacturers.
HC-Mold builds export-oriented molds and runs molding in the same Dongguan campus when buyers want prototype-to-production continuity.
Core package for mold quotations
- 3D part CAD (STEP) + 2D with critical dimensions and cosmetic faces.
- Resin grade, color, fillers (GF%), and approved alternates.
- Estimated annual volume and first-year ramp.
- Number of cavities preferred (or ask factory to propose).
- Surface finish (SPI), texture codes, logo/pad print areas.
- Gate preference if known; otherwise allow DFM proposal.
Tooling decisions that change price and schedule
| Decision | Options | Buyer impact |
|---|---|---|
| Steel | P20, NAK80, H13, stainless | Life, polish, corrosive resins |
| Runner | Cold / hot runner | Piece cost vs tool cost |
| Cavities | 1 / 2 / multi | Unit price vs tool investment |
| Actions | Slides, lifters, unscrewing | Complexity, T1 risk |
| Export package | Spare parts, manuals, hot tips | Ship readiness, local run |
Sample, ownership and quality gates
Define T1 sample quantity, dimensional report scope, and how many free T-rounds are included for mold-caused issues. State tooling ownership: buyer-owned tools stored at factory should be written into the PO. Request material certificates for steel inserts when life is critical.
DFM items to expect in a professional quote
- Draft, wall thickness and rib recommendations.
- Gate location vs cosmetic face trade-offs.
- Parting line and ejector witness notes.
- Cycle-time assumptions used for piece-price estimates.
Commercial SLA for complete RFQs
When drawings, resin, volume and finish are complete, HC-Mold aims to reply within 12 hours and issue a quote within 24 hours. Free DFM review is available with project quotes under ISO 9001:2015.
Aligning mold quotes across multiple China suppliers
When you send identical RFQs to several mold makers, require a standard response table: steel grade and hardness, cavity count, hot or cold runner brand class, estimated cycle, T1 lead time, included T-rounds, and spare parts list. Without that structure, a low price may hide P20 life on a glass-filled resin that needs harder inserts.
Ask each bidder to list assumptions explicitly—shrinkage value, press tonnage, and whether texture is in scope. Compare apples to apples on ownership language and storage fees after production. Export packages should price manuals, water diagrams and rust prevention separately if not included.
For programs that will mold in China then move tools abroad, request a process window summary with T1 samples. That document is as valuable as the steel when a foreign molder restarts the tool months later.
Buyer checklist before you issue the PO
Confirm drawings are revision-controlled, materials are purchasable in China within your schedule, and inspection methods are agreed in writing. Ambiguity at PO stage becomes cost later. List secondary operations, packaging and labeling so they are not treated as free extras. If multiple factories are bidding, freeze the same specification package for all—do not let informal calls create hidden scope differences.
Align internal stakeholders: industrial design owns cosmetics, engineering owns function, procurement owns total cost and risk. A single RFQ owner should consolidate feedback so the manufacturer receives one voice. For export programs, involve logistics early on Incoterms preference and whether tools or finished goods will cross borders.
injection mold RFQ checklist decisions improve when data is complete. HC-Mold International Co., Limited in Chang'an, Dongguan, Guangdong, China operates under ISO 9001:2015 with free DFM on complete packages, reply within 12 hours, and quote within 24 hours when files, material, volume and finish are clear. Email contact@hc-mold.cn or call +86-769-85327002. Prototype CNC frequently supports MOQ of one piece when geometry is defined.
Documentation to keep in your program folder
- Final quote with assumptions listed line by line.
- NDA and tooling ownership clauses if molds are involved.
- Approved DFM screenshots and CAD revision that matches the PO.
- Sample reports (dimensional and visual) with clear accept/reject notes.
- Packaging photos and carton specs for repeat orders.
FAQ
Do I need cavity count before RFQ?
Not always. Share annual volume and peak monthly demand; the factory can propose 1-cavity pilot vs multi-cavity production tools.
Should I specify steel grade myself?
You can state life target (e.g. 300k shots) and resin; let the toolmaker propose steel, or fix steel if your corporate standard requires it.
What is T1?
First mold trial samples after tool build. Dimensional and visual approval of T1 often gates production release.
Can HC-Mold mold parts after tooling?
Yes. Injection molds and production molding are available under one OEM partner in Dongguan.
Ready to source injection molds? Send your STEP/IGES drawings, material notes, volume band and finish requirements via our RFQ form. HC-Mold International Co., Limited is a direct OEM manufacturer in Chang'an, Dongguan, Guangdong, China (ISO 9001:2015). Contact: contact@hc-mold.cn · +86-769-85327002. Free DFM review; reply ≤12h and quote ≤24h on complete RFQ packages.
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Free DFM · reply ≤12h · quote ≤24h on complete RFQ · ISO 9001:2015 · Dongguan, China