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// Lekker's Blog
China+1 Metal Manufacturing: A Practical Playbook for OEMs
China+1 metal manufacturing is a country-and-risk strategy: keep a working China path for depth and speed, and add a second manufacturing country that can hold drawing, volume, and delivery when tariffs, capacity, or policy make single-country exposure expensive. It is not the same job as diversifying your supply chain to Asia (program sequencing across SKUs) or dual sourcing in Asia (two fabs on the same drawing). Here the question is: which second country, for which metal work, and how do you prove it before you move tools?
This guide is for procurement and SQE teams who already buy sheet metal, CNC, castings, or enclosures in China and need a credible +1 — not a slideshow of flags. Vietnam shows up often as on-the-ground proof on this site; treat it as evidence that metal capacity exists in South East Asia, not as the only destination. Thailand, Malaysia, India, and others can be the right +1 when the process map fits — the label is “plus one country,” not “plus Vietnam only.”
Use PLUS — four steps:
P — Pick: Country + process fit, not slogan
L — Limit: Which metal families enter +1 first
U — Underwrite: Prove plant, route, and tooling rules
S — Stage: Pilot share, then volume rules
1. P — Pick: country for process, not for headlines
China+1 fails when the second country is chosen for a press release.
Match process depth to your BOM: laser + brake + weld is a different map than investment casting or tight-tolerance CNC.
Ask what finishes and heat treat sit in-country vs how many truck hops you will manage.
Prefer places where you (or a partner) can visit and audit — policy risk without shop-floor access is still single-source risk with extra paperwork.
Check commercial reality: export packing culture, English/tech drawing literacy on the floor, and whether plants will open the door for SQE — not only sales.
Vietnam proof posts — CNC vs China, enclosures — show real metal work; use them as checklists, not as a mandate to put every SKU in one country.
If you do not yet have names, start with how to find suppliers in Asia and how to qualify Asia suppliers. China+1 assumes you can award a plant, not only a corridor. A country shortlist without process filters is marketing, not manufacturing strategy.
2. L — Limit: move boring metal first
Do not +1 “the China book.” Scope a constraint family:
Stable sheet-metal brackets or cabinets with clear drawings
CNC parts where a second cell can hold your CTQs without heroics
Castings only when alloy, tool ownership, and finish route are written
Leave single-source dies, unreleased ECNs, and finishes with one anonymous plater until the +1 path works on something interchangeable. Hero parts teach the wrong lesson: one late die move can kill internal support for the whole program.
Write exit criteria before RFQs: price delta floor vs China primary, lead-time floor, MOQ, who owns fixtures, and what “pass” means on first article. Put the criteria in the RFQ so plants quote against the same bar — and so your team cannot “win” China+1 by ignoring the floors after samples look pretty.
3. U — Underwrite: prove the plant before the tool moves
A second country is worthless if the shortlist is traders and sample rooms.
Demand a route sheet for your revision: in-house vs outsourced plate, paint, heat treat.
Compare a production-intent sample to a China-primary part on the same CMM points and finish callouts.
Confirm export packing and docs language — not improvised Incoterms on WhatsApp.
Decide tooling ownership early: buyer-owned fixtures at the +1 plant, or you do not have a transferable path.
Label every candidate factory vs trader vs hybrid; undisclosed traders do not underwrite a country strategy.
Build the shortlist with Market Research & Supplier Discovery, then prove process on the floor with a factory audit in Asia. Do not underwrite a country by averaging brochure lead times or by assuming “Asia capacity” equals “your alloy and your finish on your dock date.”
4. S — Stage: share volume with a switch rule
China+1 is a staged volume share, not a flip of the PO.
Pilot lot should stress the constraint process (weld + powder, machine + plate), not only laser blanks.
Keep China live until the +1 plant has shipped clean lots you trust under the same SQE scorecard.
Document the switch rule: what delay, quality event, or capacity lock triggers share increase — and who signs it.
Soft dual (same group, second country) is capacity insurance; hard dual (unrelated OEMs) is geopolitical insurance — name which you bought.
Plan ECN handling: which plant gets the next revision first, and how both stay interchangeable if drawings move.
China+1 metal manufacturing works when you pick a country for process fit, limit the first families, underwrite real fabs, and stage volume with a written switch rule. Skip a letter and you have moved risk to a new flag — not reduced it.