Overseas Production in China.
Casting and machining in Shenzhen
Sand casting, investment casting, die casting, sheet metal fabrication, CNC machining, metal injection molding, and plastic injection molding from a certified facility in Shenzhen. ISO 9001 and IATF 16949 certified, with a U.S. Account Manager owning quality, communication, and customs end to end.
The Shenzhen position
Why engineering teams produce in Shenzhen.
Certified quality first. The widest process and alloy range of any region Redstone operates in, second. Cost-effective landed cost third. Production runs at a certified facility in Shenzhen, with a U.S. Account Manager owning quality, scheduling, and customs end to end.
Engineering reviews every part before quoting.
ISO 9001 · IATF 16949
SPC and third-party inspection on every program
7 processes
Sand casting, investment casting, die casting, CNC, sheet metal, MIM, plastic injection
U.S. customs
Duties assessed and priced into the quote
1 U.S. contact
Bridges the time-zone gap, answers in your hours
Why Redstone
Why buyers run China programs through Redstone.
Certified production, competitive landed cost, and U.S.-based engineering oversight, managed end to end by Redstone's U.S. team.
- 01
Certified production, in-house inspection
ISO 9001:2015 and IATF 16949 active at the Shenzhen facility. Statistical process control from first article, and third-party inspection at origin before every shipment, with audit-ready documentation included.
- 02
Cost-effective production, landed cost locked at quote
China remains one of the most cost-effective manufacturing regions for volume programs. Duties and freight are quoted up front so the landed cost you compare is the cost you pay. Cost-effective even on programs where applicable U.S. import duties apply.
- 03
One U.S. Account Manager, accountable end to end
Your RFQ goes to a vetted certified facility and a dedicated U.S. Account Manager, not a bidding portal. Redstone manages the Shenzhen facility and owns the quality outcome, with one point of contact from quote through receiving dock.
Certified production, controlled from quote to shipment
Shenzhen programs run through certified facilities with inspection, documentation, and U.S.-based engineering oversight.
Capabilities
Shenzhen capabilities
Die Casting, CNC Machining, Sheet Metal Fabrication, Investment Casting managed from Shenzhen with U.S.-based engineering support and documented quality control.
Core processes
4 processes
Die Casting, CNC Machining, Sheet Metal Fabrication, Investment Casting
Lead time
4 to 8 weeks
Confirmed by process during feasibility review
Program value
$50k+
Volume programs with DDP pricing available
Materials
Aluminum, zinc, steel, stainless
And approved production materials
Available processes in Shenzhen
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Aluminum · zinc
Die Casting
Die Casting at certified Shenzhen facilities, run to documented quality with U.S. engineering oversight.
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Milling · turning · 5-axis
CNC Machining
CNC Machining at certified Shenzhen facilities, run to documented quality with U.S. engineering oversight.
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Laser · press brake · welding
Sheet Metal Fabrication
Sheet Metal Fabrication at certified Shenzhen facilities, run to documented quality with U.S. engineering oversight.
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Stainless · steel
Investment Casting
Investment Casting at certified Shenzhen facilities, run to documented quality with U.S. engineering oversight.
Need help choosing the right Shenzhen process?
Share your part requirements and Redstone will review manufacturability, landed cost, lead time, and quality requirements before quoting.
Why Shenzhen
A lower-cost production path,
without losing control
Shenzhen gives U.S. buyers qualified manufacturing capacity, competitive landed cost, and faster logistics while Redstone's U.S.-based team manages engineering, documentation, and quality communication.
Typical offshore sourcing
- Long freight timelines
- Time zone delays
- Unclear landed cost
- Harder supplier communication
- Quality issues found late
Redstone in Shenzhen
- DDP pricing and landed-cost planning
- U.S.-based engineering support
- Documented quality before shipment
- One U.S. point of contact, quote through dock
- Vetted certified facilities, no bidding portal
Engineering reviews manufacturability, landed cost, lead time, and quality requirements before quoting.
Logistics
U.S. customs and duties, handled end to end.
Redstone is the importer of record and handles U.S. customs brokerage on every China shipment, preparing HTS classification and commercial invoices at the Shenzhen port of export. Applicable duties are assessed at feasibility review and priced into your quote, so the landed cost you approve is the landed cost you pay.
- Importer of record
- Redstone
- Pricing
- DDP at quote
- Duties & freight
- Quoted up front
- Landed cost
- Matches quote
A five-step process, documented at every handoff
From initial drawings to final delivery, Redstone keeps each stage clear, documented, and aligned with production requirements.
Each handoff is documented. No stage moves forward until drawings, materials, and production requirements are confirmed with the customer.
- 01
Quoting
Send part files, material spec, and annual volume. Your U.S. Account Manager reviews every submission for manufacturability and process fit before quoting, including alloy selection.
- 02
Order placement
Review the all-in landed cost, then sign the production agreement. A detailed quotation covers tooling, unit pricing by volume tier, lead time, ocean freight, and applicable duties quoted up front. Redstone confirms the Shenzhen facility assignment, tooling timeline, and first-article schedule.
- 03
Tooling and first article
Tooling is designed and produced at the Shenzhen certified facility. First-article samples ship to your engineering team for sign-off, with a PPAP package available on regulated programs.
- 04
Production under SPC
Volume production runs at the Shenzhen certified facility under documented quality control. Statistical process control is applied from first article, with lot traceability maintained end to end. Third-party inspection runs at origin before every shipment.
- 05
Customs, freight, and shipment
U.S. customs brokerage and applicable duties are handled by the Redstone logistics team and priced into your quote. Ocean freight from the Shenzhen port to your U.S. port of entry, then inland to your dock. Every shipment includes a Certificate of Conformance and a dimensional inspection report. Landed cost matches the quote.
Production proof
The work behind every program.
Casting, machining, fabrication, and inspection running at the Shenzhen facility every week.
Production & Shipping
Shipping and lead time
Controlled Production. Global Footprint.
Shenzhen, China
Anchor production city. Casting, machining, sheet metal, MIM, and plastic injection in certified facilities. ISO 9001:2015 and IATF 16949.
U.S. program management
DFM review, scheduling, quality documentation, and customs run from the U.S. Account Manager, with one point of contact per program in your business day.
Lead time 4-8 weeks
Shipping and lead time
Ocean freight runs from the Shenzhen port to your U.S. port of entry, then inland to your dock. U.S. customs brokerage and applicable duties are handled end to end by the Redstone logistics team and priced into the quote. What you see at quote is what you pay at delivery.
Questions, answered
Shenzhen production, the details that matter
Is China production still cost-effective with U.S. import duties?
For most volume programs, yes. China remains one of the most cost-effective manufacturing regions even after applicable duties. We assess and quote duties up front at the feasibility review, so the landed cost you compare is the landed cost you pay. The answer depends on the specific program, tariff classification, and volume, and we tell you at the quote stage.
What processes can Redstone run in Shenzhen?
Sand casting, investment casting, die casting in aluminum and zinc, CNC machining, sheet metal fabrication, metal injection molding, and plastic injection molding. Secondary machining and finishing run in-line at the certified facilities.
What quality documentation comes with China shipments?
Every shipment includes a Certificate of Conformance and a dimensional inspection report. First-article inspection is standard on every new part. Third-party inspection at origin runs before every shipment. PPAP packages are available on regulated programs. Statistical process control records and material traceability are maintained for the life of the program.
Can Redstone take over an existing China program that has quality problems?
Yes. Send the existing tool drawings, part history, and current supplier documentation. We assess transfer feasibility, run a parallel quote at our Shenzhen certified facility, and project the landed-cost and lead-time impact before you commit. Existing tooling is often re-usable after assessment. The program stays in China and moves to a certified facility with U.S. oversight.
What are the lead times and how does shipping work?
Standard production lead time is 4 to 8 weeks from approved tooling. Ocean freight from China to a U.S. port of entry adds transit time on top, handled by the Redstone logistics team with customs cleared on arrival. The full timeline including ocean freight is quoted at the feasibility review. Redstone is the importer of record.
Request a quote
Ready to quote a China program?
Send your part files and annual volume. Your U.S. Account Manager reviews every submission for manufacturability and process fit before quoting. Full quote with duties and freight included.
- ISO 9001 and IATF 16949 certified facility
- Dedicated U.S. Account Manager, RFQ through delivery
- U.S. customs and duties handled end to end
- $50,000 minimum program value, volume programs
Explore Redstone capabilities
Browse Redstone processes, materials, and secondary operations that support production-ready metal parts.
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- CNC Machining
- Surface Finishing
- Inspection & CMM