Why Don't Three Quotes for the Same Precision Mold Add Up?

The scene procurement encounters most often: the same 3D drawing sent to three suppliers, and the quotes come back wildly different. The first reaction is "who's quoting randomly." But placing the three sheets side by side, in most cases it's not random quoting—the three are simply not calculating the same mold: one includes mold-flow analysis and trial-mold counts, another quotes only steel and machine time; one specifies the steel grade, another only writes "imported premium material." Prices thus lose comparability.

Before comparing prices, do one thing first: align the scope. The 6 sections below are the skeleton a precision/medical injection-mold quotation should have.

I. First, Distinguish the Three Sources of Price Differences

Only the latter two categories are worth negotiating. Cutting price without resolving the first category is like moving the cost from the quotation to after T0—where it's usually more expensive.

II. Break the Quotation into 6 Sections

This table is not to pick on who "did less," but to give the three suppliers a common fill-in frame. The more blank cells, the less comparable the quotes.

III. Two Cost Variables Easily Underestimated

• Mold steel: Under public research-report caliber, high-end mold steel import dependence is about 50%–65% (different institutions have different statistical scopes: Zhongyan Puhua's 2025 report is 65%, while another industry compilation counts 50%). Special grades need separate lead-time allowance; the grade also directly determines polishability, corrosion resistance, and mold life.

• Hot runner: Localization rate has exceeded 50% (Zhongyan Puhua, 2025); domestic parts are perfectly usable, but brand, valve-gate type, and temperature-control configuration must be stated clearly on the quote, otherwise same price, different goods.

• A set of efficiency variables worth singling out: penetration of digital-twin-based online mold-flow analysis rose from 32% in 2023 to 58% in 2025 (GEP Research public report, 2026); industry research compilations show that digital design and upfront simulation reduced development cost by about 28% and shortened time-to-market by about 41% (China Die & Mould Industry Association / industry research compilation, 2026); high-speed cutting penetration has reached 65% (Zhongyan Puhua, 2025). These are the certainty bought by "adding a design phase fee upfront"—they should not be treated as deletable loose change when comparing prices.

IV. The 3 Scopes That Truly Need Aligning

1. Whether DFM and mold-flow analysis reports are included;

1. How many trial molds are included, and to what state mold repair counts as acceptance;

1. Whether first-article full inspection report and per-mold digital archive are included.

Put these three questions in the RFQ email, and the returned quotes become comparable immediately—far more efficient than haggling back and forth.

V. Low Price Isn't Necessarily a Loss, High Price Isn't Necessarily Worth It

If the structure is simple, appearance requirements are low, and production batches are few, a streamlined configuration is a reasonable choice—no need to pay for processes you won't use. But medical consumables, multi-cavity, thin-wall, and appearance parts are another matter: upfront simulation, inspection, and documentation are prerequisites for mass-production yield; cutting them often comes back with interest after T0.

There is only one criterion: whether this quote covers the risks specific to your project, not the unit price level. Writing the project risks clearly saves more money than cutting the price down.

VI. A Comparison Table You Can Copy Directly

One row per supplier; a blank cell is a to-be-confirmed item. Once filled, which suppliers are on the same scope and which still have blanks is clear at a glance.

VII. The 3-Step Verification Method After Receiving Quotes

1. Complete the 6 sections: re-arrange the three quotes by the same table, email to clarify blanks, don't guess.

1. Verify the 3 scopes: DFM / mold-flow, trial molding and acceptance, inspection and traceability.

1. Then tally the total: factor in expected mold-revision counts, mass-production anomaly response, spare-part and downtime costs, then compare total price.

In most cases, quotes that originally differed wildly converge to a comparable range at step 1.

VIII. 4 Add-On Items for Medical / Precision Parts

• Corrosion resistance and cleanliness: contact-grade and pharma-packaging parts have extra requirements on steel corrosion resistance, polishing, and cleaning; the grade must be written into the quote.

• Inspection documents: first-article full inspection, dimensional record archiving, per-mold digital archive.

• System documents: verification documents per customer requirements, confirmed upfront at the DFM stage—don't wait for the audit to supplement.

• Change management: drawing and material changes need a trail; the quote should include version-management scope.

[Boundary statement] Jingmu provides molds and injection-molding support, and does not directly manufacture finished medical devices; related product registration/filing is the responsibility of the customer as registrant.

IX. How Jingmu Does It

Jingmu's quotation lists the above 6 sections explicitly; steel grade, hot-runner brand, and trial-molding and inspection scopes are written out as completely as possible in one go, reducing subsequent scope back-and-forth.