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Cast Precision,
Cast Reputation, Cast Progress

DongYing ChangRui Mechanical-Electrical Co., Ltd – Your trusted partner in precision metal casting and machining. Specializing in stainless steel, carbon steel, high-temperature alloys, and non-ferrous metals with 90%+ export rate to Europe, USA, Japan & Australia.

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About ChangRui

Dongying Changrui Electromechanical Co., Ltd is located near the fertile estuary of the Yellow River, part of the Bohai Economic Circle. Just two hours from Qingdao Port, our strategic location enables efficient global logistics.

We specialize in producing customized metal parts from a wide range of materials including stainless steel, heat-resistant steel, carbon steel, low-alloy steel, high-temperature alloys, and non-ferrous alloys. 90% of our products are exported to Europe, America, Japan, Australia, and other key markets.

Our mission is to provide high-quality services and stable, premium products that help our customers win in their markets.

ChangRui Factory
90%+
Products Exported Globally
90%+
Products Exported
120+
Tons Monthly Capacity
900+
Alloy Grades Available
500+
New Parts Developed Annually
12,000+
Parts Developed Total

Why Choose ChangRui?

Over two decades of expertise, cutting-edge technology, and unwavering commitment to quality.

Quality Assurance

Advanced testing equipment, IATF16949 certified, and comprehensive monitoring ensure every product meets the highest standards.

Technical Strength

Nearly 20 years of foundry experience with a full technical team capable of mold design, casting process, and machining planning.

Production Capacity

120+ tons monthly precision casting output, over 900 alloy grades, and stable processes ensure on-time delivery.

Full-Service Support

One-stop procurement, factory acceptance, quality control, and supplier auditing for seamless customer experience.

Our Products

Customized metal parts for diverse industries with precision casting and machining.

Stainless Steel Pump Valve

Stainless Steel Pump & Valve Parts

Precision investment cast components for high-pressure and corrosive environments.

  • Material: 304, 316, CF8, CF8M
  • Process: Investment Casting + CNC Machining
  • Applications: Oil & Gas, Water Treatment
Automotive Components

Automotive Components

Critical engine and transmission parts with tight tolerances.

  • Material: Carbon Steel, Alloy Steel
  • Process: Investment Casting + Heat Treatment
  • Standards: IATF16949 Compliant
Marine Hardware

Marine Hardware

Corrosion-resistant fittings and connectors for marine environments.

  • Material: Duplex Stainless Steel, Bronze
  • Process: Investment Casting + Surface Treatment
  • Applications: Shipbuilding, Offshore Platforms
Agricultural Machinery Parts

Agricultural Machinery Parts

Durable components for tractors, harvesters, and plows.

  • Material: Low-Alloy Steel, Heat-Resistant Steel
  • Process: Coated Sand Casting + Machining
  • Features: High Wear Resistance
Precision Lock Components

Precision Lock Components

Miniature, high-tolerance parts for security and access systems.

  • Material: Brass, Stainless Steel
  • Process: Die Casting + Precision Machining
  • Tolerance: ±0.01mm
High-Temperature Alloy Parts

High-Temperature Alloy Parts

Components for extreme thermal environments like turbines and furnaces.

  • Material: Inconel, Hastelloy, Nickel Alloys
  • Process: Investment Casting + Heat Treatment
  • Temp Resistance: Up to 1200°C
Tool Components

Tool Components

Hardened and wear-resistant parts for power and hand tools.

  • Material: Carbon Steel, Tool Steel
  • Process: Forging + CNC Machining
  • Hardness: HRC 50-60
Custom Machined Parts

Custom Machined Parts

End-to-end machining from casting to final product with full QA.

  • Capabilities: 3/4/5-Axis CNC
  • Materials: All ferrous & non-ferrous metals
  • Inspection: CMM, Optical Comparator

Our Capabilities

From casting to final assembly, we offer complete in-house manufacturing solutions.

Investment Casting

Heat Treatment

Machining

Surface Treatment

Assembly

Serving Global Industries

Our parts power critical applications across diverse sectors worldwide.

Agriculture

Automotive

Lock

Marine

Pump & Valve

Tool

Machinery

Energy

Quality Assurance

Changrui has passed IATF16949 quality certification and maintains a comprehensive inspection capability across all production stages.

  • Advanced testing equipment and skilled personnel
  • Stable production process control
  • Full traceability from raw material to final product
  • CMM, Spectrometers, Hardness Testers, and more
Quality Inspection

Get in Touch

Reach out for quotes, technical inquiries, or partnership opportunities.

+86 (0) 546 8902099
[email protected]
Visit Official Website
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