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Your Most Trusted Manufacturing Partner in China

SUMONESTOP delivers reliable, efficient, and easy custom manufacturing solutions — from prototyping to full-scale production. We help global businesses save time and money with expert engineering and one-stop services.

Manufacturing Facility

15+

Years of Experience

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K+ Active Members

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Who We Are

SUMONESTOP is your trusted B2B manufacturing partner in China, offering comprehensive support from A to Z. With over 15 years of experience, our highly skilled team specializes in cost-effective, schedule-conscious production of high-quality custom parts.

We provide one-stop manufacturing services — from design and prototyping to full assembly and logistics — making custom manufacturing in China efficient and easy.

  • First-class quality and service readiness
  • Custom parts in metal, plastic, and wood
  • End-to-end project management
  • Fast turnaround and global shipping
Learn More About Us

Our 4-Step Process

We simplify custom manufacturing with a transparent, efficient workflow designed to save you time and money.

1

Upload Design

Submit your idea with drawings, 3D models, quantities, and delivery requirements.

2

Engineering DFM Review

Receive a detailed quote with optimal solutions for sample, production, lead time, and freight.

3

Confirm Quote

Your order begins with strict quality control throughout the manufacturing process.

4

100% Service Support

We handle packaging, FOB, CIF, DDU, DDP — finding the best logistics solution for you.

Our Manufacturing Services

From prototyping to mass production, we offer a full suite of precision manufacturing capabilities.

Rapid Prototyping

Fast-turn functional prototypes to validate your design before full production.

CNC Machining

3/4/5-axis CNC machines for high-precision parts with tight tolerances.

Sheet Metal Fabrication

Cutting, bending, stamping, welding, and forming for industrial applications.

Plastic Injection Molding

Optimal solutions for small-batch and mass production with cost-effective tooling.

Metal Injection Molding (MIM)

High-volume production of complex, small metal parts with excellent surface finish.

Surface Treatment & Finishing

Polishing, anodizing, PVD, and more to enhance appearance and durability.

Our Custom Manufacturing Solutions

Explore our range of high-quality custom parts and assemblies for diverse industries.

CNC Machined Parts

Precision CNC Parts

Complex geometries, tight tolerances, and high repeatability for aerospace and medical applications.

Sheet Metal Enclosures

Custom Sheet Metal Enclosures

Laser cutting, bending, and welding for industrial control boxes and panels.

Plastic Injection Molds

Plastic Injection Molds

Custom molds for consumer electronics, medical devices, and home appliances.

Metal Injection Molding

Metal Injection Molding (MIM)

High-volume production of intricate metal components for automotive and medical use.

Welded Assemblies

Welded & Assembled Structures

Complete fabrication and assembly of structural frames and support systems.

Die Casting

Die Casting & Vacuum Casting

High-pressure casting in aluminum, zinc, and magnesium for durable parts.

Anodized Components

Surface Finishing Services

Anodizing, powder coating, polishing, and PVD for enhanced durability and aesthetics.

Custom Tooling

Rapid & Production Tooling

Fast turnaround for prototype and production molds with full DFM support.

Why Choose SUMONESTOP?

We combine technical expertise, quality assurance, and customer-centric service to deliver unmatched manufacturing value.

Quality Assurance

From material selection to final inspection, every step is monitored to meet your predefined standards. Certified under ISO9001:2015, AS9100, IATF16949, ISO 14001, RoHS, REACH, and UN38.3.

Engineering Support

Our team has over 15 years of multi-specialty fabrication experience, offering expert DFM analysis and technical guidance.

One-Stop Solutions

From design to delivery — prototyping, tooling, manufacturing, assembly, and logistics — all under one roof.

Reliable Service

We offer FOB, CIF, DDU, DDP, and customized packaging to ensure your products arrive safely and on time.

Frequently Asked Questions

What materials do you work with?

We work with a wide range of metals (aluminum, steel, stainless steel, brass), plastics (ABS, PC, PP, PA), and wood-based composites.

What is your typical lead time?

Prototypes: 5–10 days. Production orders: 15–30 days depending on complexity and volume. We offer expedited options.

Do you offer design for manufacturing (DFM) support?

Yes, our engineering team provides free DFM analysis to optimize your design for cost, quality, and manufacturability.

Can you handle small batch and mass production?

Absolutely. We specialize in both low-volume prototyping and high-volume production with scalable tooling solutions.

What certifications do you hold?

We are ISO9001:2015, AS9100, IATF16949, ISO 14001, RoHS, REACH, and UN38.3 certified. DUNS: 421300172.

Ready to Bring Your Product to Life?

Contact our team for expert engineering advice and a fast quote. We’re here to help you every step of the way.

Email: [email protected]

Phone: (+6221) 2002 2012

Fax: (+6221) 2002 2013

Head Office: No.64 Hong Tu Road, Nan Cheng Street, Dongguan City, Guangdong Province, China

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