01
Consumer Electronics
Housings, keypads, lenses and structural components for telephones, audio devices, digital cameras, LCD monitors and computer peripherals — produced with optical-grade clarity and fine-tolerance detailing.
[01] Sectors We Serve · 服務領域
Industries we serve.
From consumer electronics to automotive and healthcare, Grand Long delivers precision-moulded plastic components to high-tech brands across diverse global markets.
[02]Market Reach
Three decades of precision moulding across global industries.
Since 1988, Grand Long has supplied precision injection-moulded components to manufacturers in consumer electronics, telecommunications, automotive, healthcare, environmental monitoring and industrial equipment. Our 10,000 m² Shenzhen plant combines 30+ injection machines — 45 to 750 tons — with in-house tooling, double-injection capability and a full secondary-process workshop, giving us the flexibility to serve both high-volume consumer brands and low-volume specialist producers from a single facility. Every project is backed by ISO 9001 quality management and ISO 14001 environmental standards, with geometric precision verified to 0.0001mm on 3D CNC vision measuring equipment.
[03]Sector Expertise
02
Automotive
Lamp housings, lenses, interior trim and under-bonnet components moulded in engineering-grade resins, meeting thermal and impact requirements for vehicle applications.
03
Telecommunications
Precision connectors, bezels and enclosures for networking and communications hardware, manufactured to tight dimensional tolerances for reliable assembly.
04
Healthcare & Medical Devices
Instrument housings and components for health-care devices, produced in a controlled environment with dust-free spraying and ultrasonic welding for clean, repeatable assembly.
05
Environmental Monitoring
Housings and structural parts for environmental detection instruments, engineered for durability and precision in field-deployed measurement equipment.
06
Industrial Equipment
Gears, brackets, covers and mechanical components for industrial machinery, moulded in technical polymers and validated on 3D CNC vision measurement systems.
[04]Engineering Case Studies · 精密製造案例
[01]
Industrial & Environmental Instruments
Dual-Shot Waterproof Enclosure (PC + TPE)
- Challenge
- Achieving IP67 sealing and drop resistance for handheld field detectors.
- Solution
- 250T Japanese electric servo two-shot molding with precision core-back tooling.
- QC Result
- 100% air-leakage pass rate; critical sealing dimensions verified to 0.0001mm on our 3D CNC Vision Measuring Machine.
[02]
Smart Home & Consumer Audio
High-Wear Decorative Switch Panels & Housings (PC / PMMA)
- Challenge
- Eliminating flow marks on thin-wall transparent parts while ensuring high abrasion resistance on printed surfaces.
- Solution
- High-speed Fanuc CNC mirror-polished cavities + in-house dust-free UV hard coating and precision multi-layer printing.
- QC Result
- Passed 500g steel-wool abrasion and cross-hatch adhesion tests with zero delamination.
[03]
Telecommunications & Marine Electronics
Complex Multi-Cavity Structural Housing + Turnkey Assembly
- Challenge
- Consolidating 6 sub-components from multiple vendors into one reliable supply chain.
- Solution
- Automated hydraulic servo molding with robotic take-out, followed by in-house automatic brass nut insertion, ultrasonic welding, and pad printing.
- QC Result
- Reduced client lead time by 30% under ISO 9001:2015 quality control.
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