Precision Die Casting &
CNC Machining Solutions

Professional one-stop manufacturing services including aluminum & zinc die casting, plastic injection, CNC precision machining, custom fabrication, and tooling design for global industries.

Aluminum Die Casting Zinc Die Casting CNC Machining Plastic Injection Custom Fabrication

Trusted Manufacturing Partner Since 2004

LONGJUN INDUSTRIAL (HK) LIMITED is a leading provider of precision aluminum and zinc die castings, CNC machining parts, and custom fabrication solutions for global markets.

Equipped with advanced die casting machines (80T–1200T), CNC centers, and full-series production & testing equipment, we deliver professional one-stop services from design and prototyping to mass production and value-added assembly.

ISO9001 & ISO14001 Certified

Zero Defects Target

Global Customer Base

Our Product Range

High-precision die cast and machined components for diverse industries including lighting, telecommunications, automotive, and renewable energy.

Die Cast Heat Sinks

Custom aluminum heat sinks for solar power converters, inverters, LED lighting, and electronic enclosures. Optimized thermal performance with precision casting.

Lighting Die Cast Parts

Enclosures and housings for LED tunnel lamps, floodlights, street lights, traffic signals, garage lighting, and wall sconces.

Electrical Die Cast Components

Enclosures, housings, covers, shells, cabinets, and frames for telecommunications, PCBs, generators, and sound equipment.

Telecom Aluminum Castings

Custom aluminum die castings (1g–10kg) for the telecommunications industry. High-integrity parts with tight tolerances.

OEM Zinc Die Cast Parts

Manufactured for automotive, medical, electronics, appliances, and computer systems. Machines from 80T to 280T.

Custom Fabrication

Full-service metal fabrication including stamping, extrusion, assembly, and finishing for complex industrial applications.

Plastic Injection Molding

Complete plastic injection services from mold design to mass production and assembly. PRO/ENGINEER & SOLIDWORKS supported.

CNC Precision Machining

High-accuracy CNC milling, turning, EDM, and wire cutting for secondary operations and complex geometries.

Comprehensive Manufacturing Services

From concept to mass production, we offer full-cycle engineering and manufacturing support.

Tooling & Mold Design

PRO/ENGINEER, SOLIDWORKS, and Unigraphics-based design with mold flow simulation for optimal performance.

Prototyping

Rapid prototyping with 3D printing and CNC machining to validate designs before tooling.

Mass Production

Scalable production with 80T–1200T die casting machines and automated CNC centers.

Quality Control

ISO9001 & ISO14001 certified processes with rigorous inspection and zero-defect goals.

Frequently Asked Questions

What materials do you work with?

We specialize in aluminum, zinc, and magnesium alloy die casting, as well as plastic injection molding and CNC machining for various metals and engineering plastics.

What is your production capacity?

Our die casting machines range from 80T to 1200T, enabling us to produce parts from 1g to 10kg. We support both low-volume prototyping and high-volume mass production.

Do you provide design support?

Yes, our engineering team works closely with customers on part and mold design, offering mold flow simulation, DFM analysis, and design optimization for manufacturability.

What certifications do you have?

We are ISO9001 and ISO14001 certified, with a strong focus on quality management and environmental responsibility in all our manufacturing processes.

What secondary operations do you offer?

We provide CNC machining, annealing, tumble and cryogenic deburring, vibratory finishing, painting, electrical plating, and full assembly services.

Get in Touch

Have a project or inquiry? Contact us today for a quote or technical consultation.

Email:

info@ljcnc-casting.com

Phone:

+86-755-28688356

Fax:

+86-755-32985058

Locations:

Shenzhen & Dongguan, Guangdong Province, China

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Precision Die Casting & CNC Machining Solutions