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Precision Frequency Control Solutions

GMK brings high value to your products and convenience to your customers with the most diverse range of high-quality frequency control devices available today.

Explore Our Products
Great Marking Company

About Great Marking

Great Marking (HK) Industry Co., Ltd is a globally recognized manufacturer and vendor in the electronic components market, specializing in frequency control devices.

With over 10 years of experience, we have established a strong reputation for delivering high-performance quartz crystals, ceramic resonators, bell resonators, and crystal filters. Our components are widely applied in computers, communication systems, televisions, acoustics equipment, and various electronic industries.

Core Expertise

  • ✅ Quartz Crystals
  • ✅ Ceramic Resonators
  • ✅ Bell Resonators
  • ✅ Crystal Filters
  • ✅ Frequency Control Devices

Our Product Range

High-quality, reliable frequency control components engineered for performance and durability across industries.

Quartz Crystal

Quartz Crystal

High-precision frequency control for stable timing in digital circuits.

  • • Frequency Range: 1MHz – 100MHz
  • • Stability: ±10ppm to ±50ppm
  • • Package: HC-49/S, SMD
  • • Applications: Microcontrollers, Communication Devices
Ceramic Resonator

Ceramic Resonator

Cost-effective timing solution with fast start-up and compact size.

  • • Frequency Range: 1MHz – 10MHz
  • • Built-in Capacitors
  • • Package: 3.0x8.5mm, SMD
  • • Applications: Consumer Electronics, Remote Controls
Bell Resonator

Bell Resonator

High-sound-output resonator ideal for audible alert systems.

  • • Resonant Frequency: 2.7kHz – 4.0kHz
  • • Operating Voltage: 3V – 12V
  • • Sound Pressure: ≥85dB
  • • Applications: Alarms, Timers, Appliances
Crystal Filter

Crystal Filter

Narrow bandwidth filtering for high-selectivity RF applications.

  • • Center Frequency: 455kHz, 10.7MHz
  • • Bandwidth: 6kHz – 15kHz
  • • Insertion Loss: ≤3dB
  • • Applications: Radios, Receivers, Communication Modules
SMD Quartz Crystal

SMD Quartz Crystal

Miniaturized surface-mount crystal for space-constrained PCBs.

  • • Size: 2.0x1.6mm, 3.2x2.5mm
  • • Frequency: 12MHz, 16MHz, 25MHz
  • • Low EMI Design
  • • Applications: Smartphones, IoT Devices, Wearables
High-Frequency Crystal

High-Frequency Crystal

Engineered for high-speed digital systems requiring precise clocking.

  • • Frequency: Up to 200MHz
  • • Low Phase Noise
  • • Hermetic Sealing
  • • Applications: Networking, Servers, FPGA Clocking
Tuning Fork Crystal

Tuning Fork Crystal

Low-frequency crystal ideal for real-time clocks and low-power devices.

  • • Frequency: 32.768kHz
  • • Ultra-Low Power Consumption
  • • Package: Cylindrical, SMD
  • • Applications: RTC Modules, Wearables, Sensors
Custom Resonator

Custom Resonators

Tailored frequency components designed to meet specific application needs.

  • • Custom Frequencies & Packages
  • • Prototyping Support
  • • Volume Production
  • • Applications: Industrial, Automotive, Medical

Why Choose GMK?

Decades of expertise, global reach, and a commitment to quality make us a trusted partner in frequency control.

10+

Years of Experience

Over a decade of innovation and excellence in frequency control technology.

Global

Worldwide Reach

Trusted by clients across Asia, Europe, and North America.

ISO

Quality Assured

Rigorous testing and compliance with international standards.

R&D

Innovation Driven

Continuous R&D to deliver cutting-edge timing solutions.

10M+
Components Shipped Annually
50+
Global Clients
99.8%
Customer Satisfaction

Frequently Asked Questions

What are the main applications of your quartz crystals?

Our quartz crystals are widely used in computers, communication devices, TVs, audio equipment, and various electronic systems requiring precise timing.

Do you offer custom frequency components?

Yes, we provide custom design and manufacturing services for resonators and crystals based on specific frequency, size, and performance requirements.

What is the lead time for sample orders?

Sample lead time is typically 7–10 business days. Mass production orders vary based on volume and customization.

Are your products RoHS compliant?

Yes, all our electronic components comply with RoHS and other environmental standards.

Where is your manufacturing facility located?

Our operations are based in Shenzhen, China, with a strategic location in Pingshan District for efficient logistics and production.

Get in Touch

For inquiries, samples, or technical support, visit our official website to connect with our team.

Contact Information

Address: C-406, Kaiwo building, Huibei Rd 1, Shatian community, Pingshan District, Shenzhen 518118, CHINA

Phone: +86-755-89895206

Mobile: +86-13510753110

Email: [email protected]

Alternate Email: [email protected]

Website: www.greatmarking.com

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