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Precision Digital Readouts &
Linear Encoder Systems

Dongguan Yihao Precision Optoelectronics Co., Ltd delivers high-accuracy linear scales, magnetic encoders, digital readouts, and power feed systems trusted by manufacturers worldwide since 2008.

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About YIHao Precision

Dongguan Yihao Precision Optoelectronic Co., Ltd is a professional manufacturer based in Dongguan, China, specializing in the development and production of Precision Digital Readouts (DRO), Linear Scales, Magnetic Scales, and industrial automation components.

Since our inception in 2008, we have been committed to delivering the highest quality measurement and control systems. Our linear scales are calibrated using laser technology to ensure micron-level accuracy, meeting internationally accepted quality standards.

We export our products globally, helping machine shops, CNC operators, and manufacturing facilities improve productivity, precision, and product value through reliable digital measurement solutions.

YIHao Precision Manufacturing Facility

One-Stop Tool Station

We are committed to providing tools that everyone can take advantage of — diversified products to effectively address the different tool needs of different user groups, and to be your exclusive helper.

Quality Guaranteed

All products meet international standards with laser-verified accuracy and rigorous testing.

High Efficiency

Improve machine productivity and reduce operator error with real-time digital feedback.

Global Export

Trusted by customers in over 50 countries with reliable shipping and support.

Our Products

High-precision measurement and control systems for industrial applications

YH800 LCD DRO

YH800 LCD DRO

Advanced digital readout with large LCD display, ideal for milling machines and lathes.

  • • 4-axis support
  • • Absolute/Incremental modes
  • • Metric/Imperial conversion
  • • Low power consumption
YH800-2K Mini LCD DRO

YH800-2K Mini LCD DRO

Compact and powerful DRO system for space-constrained setups.

  • • Ultra-compact design
  • • High-contrast display
  • • USB rechargeable
  • • Easy installation
VM600 Series Digital Readout

VM600 Series Digital Readout

Professional-grade DRO with enhanced processing and connectivity.

  • • Multi-axis synchronization
  • • RS232 output
  • • Programmable functions
  • • Anti-interference design
Linear Scale

High-Accuracy Linear Scale

Precision optical linear encoder with laser-calibrated accuracy.

  • • Resolution down to 1μm
  • • Aluminum housing
  • • IP64 protection
  • • Flexible mounting options
Magnetic Scale

Magnetic Displacement Measuring Scale

Robust magnetic encoder for harsh industrial environments.

  • • Oil and coolant resistant
  • • No contact measurement
  • • High shock resistance
  • • Long service life
Power Feed System

Power Feed System

Automated feed control for milling machines to improve consistency.

  • • Variable speed control
  • • Smooth operation
  • • Easy retrofit
  • • Overload protection
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YH400 Compact DRO

Entry-level digital readout for hobbyists and small workshops.

  • • Affordable pricing
  • • Simple interface
  • • 2-axis support
  • • Battery powered
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Heavy-Duty Linear Encoder

Industrial-grade encoder for CNC retrofit and large machinery.

  • • Up to 3000mm length
  • • High-speed signal output
  • • Thermal compensation
  • • Customizable
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Wireless DRO System

Modern wireless digital readout with Bluetooth and display sync.

  • • No cable clutter
  • • Real-time sync
  • • Rechargeable battery
  • • Mobile app support
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Angle Encoder Module

Precision rotary measurement for indexing heads and rotary tables.

  • • High-resolution feedback
  • • Compact design
  • • Digital output
  • • Easy integration
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DRO Mounting Kits

Complete hardware kits for easy installation of DRO systems.

  • • Universal compatibility
  • • All necessary brackets
  • • Anti-vibration design
  • • Quick setup
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Industrial Automation Package

Integrated solution combining DRO, encoder, and power feed.

  • • Complete system
  • • Plug-and-play
  • • Technical support
  • • Custom configurations

Why Choose YIHao DRO?

Laser-Calibrated Accuracy

All linear scales are verified using laser interferometry for micron-level precision.

High Reliability

Engineered for 24/7 industrial use with robust materials and anti-interference design.

Global Support

Exported to over 50 countries with responsive technical and sales support.

Continuous Innovation

Committed to R&D and continuous improvement of products and manufacturing processes.

15+
Years in Business
50+
Countries Served
10M+
Units Produced
99.7%
Customer Satisfaction

Frequently Asked Questions

What is a DRO system?

A Digital Readout (DRO) system displays real-time position data from linear or rotary encoders on machine tools like mills and lathes, improving accuracy and efficiency.

Can I retrofit a DRO to my existing machine?

Yes, most of our DRO systems are designed for easy retrofitting onto manual or CNC machines. We offer mounting kits and technical guidance for installation.

What's the difference between optical and magnetic scales?

Optical scales offer higher accuracy and resolution but require clean environments. Magnetic scales are more durable in oily, dusty, or wet conditions and are ideal for industrial settings.

Do you offer custom solutions?

Yes, we provide OEM/ODM services and can customize DRO systems, scales, and automation packages based on your specifications and machine requirements.

What warranty do you provide?

We offer a standard 12-month warranty on all products, covering defects in materials and workmanship under normal use.

Get in Touch

Contact Dongguan Yihao Precision Optoelectronics Co., Ltd for product inquiries, technical support, or custom solutions.

Contact Information

Phone: +86 15818638517
Email: [email protected]
Fax: +86-769-21611686
Address: No.37, Shangnan Rd, Huayue Tech Industrial Garden, Chang’an Town, Dongguan, Guangdong, CHINA
Website: www.yihaodro.com
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