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Advanced Environmental
Monitoring & Detection Solutions

Beijing Leshi Alliance Technology Co., Ltd is a leading provider of VOCs analysis, LDAR systems, and atmospheric preconcentration solutions for industrial, governmental, and research applications.

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About Leshi Group

Beijing Leshi Alliance Technology Co., Ltd is a high-tech enterprise specializing in the research, development, and manufacturing of advanced environmental monitoring instruments. With years of expertise, we deliver reliable and precise solutions for VOCs detection, LDAR programs, and atmospheric analysis.

Our products are widely applied in environmental protection, industrial safety, scientific research, and third-party testing agencies. We are committed to providing superior technology and service to protect air quality and ensure regulatory compliance.

Industrial Applications

Scientific Research

Leshi Laboratory

Our Products

Comprehensive range of high-precision instruments for VOCs analysis, gas sampling, leak detection, and environmental monitoring.

ONTECH880 Preconcentrator

ONTECH880 Four Stage Cold Trap Preconcentrator

High-efficiency VOCs preconcentration system with four-stage cooling for ultra-trace gas analysis.

  • Four-stage cold trap
  • High enrichment factor
  • Suitable for SUMMA canisters
ONTECH870 Preconcentrator

ONTECH870 Liquid Nitrogen Refrigeration Preconcentrator

Uses liquid nitrogen for deep cooling, ideal for low-concentration VOCs analysis in ambient air.

  • Deep refrigeration down to -180°C
  • High sensitivity
  • Stable performance
ONTECH860 Preconcentrator

ONTECH860 Electronic Refrigeration Preconcentrator

Environmentally friendly electronic cooling system without liquid nitrogen, suitable for field use.

  • No cryogenic fluids required
  • Portable and safe
  • Low maintenance
GIR320 Gas Detector

GIR320 VOCs Infrared Imaging Gas Leak Detector

Real-time infrared imaging for visualizing VOCs leaks in industrial environments.

  • Visual leak detection
  • Fast scanning
  • Non-contact measurement
ONTECH320 LDAR Analyzer

ONTECH320 LDAR Portable VOC Gas Analyzer

Designed for Leak Detection and Repair (LDAR) programs in petrochemical and industrial facilities.

  • FID detection technology
  • High sensitivity (ppb level)
  • Rugged design for field use
ONTECH720 Online Concentrator

ONTECH720 Online Two-Stage Cold Trap Concentrator

Continuous online VOCs monitoring system with automatic preconcentration and analysis.

  • Fully automated operation
  • Real-time data output
  • Remote monitoring capability
ONTECH850 Dilutor

ONTECH850 High-Precision Static Dilutor

Accurate gas dilution system for calibration and standard gas preparation.

  • High accuracy and stability
  • Wide dilution ratio range
  • Suitable for lab and field
ONTECH830 Canister Cleaner

ONTECH830 SUMMA Canister Cleaning System

Automated system for cleaning and preparing SUMMA canisters for ambient air sampling.

  • Full automation
  • High cleaning efficiency
  • Ensures sample integrity
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Key Applications

Our solutions are trusted by government agencies, research institutions, and industrial enterprises worldwide.

Government & Environmental Protection

Used in environmental protection, special inspections, quality control, disease prevention, metrology, and public security units.

University & Scientific Research

Applied in environmental, materials, chemical, thermal energy, and other research institutes.

Industry & Enterprise

Widely used in steel, metallurgy, ceramics, power generation, petroleum, petrochemical, refining, and coal chemical industries.

Third-Party Testing Agencies

Professional analytical equipment providing reliable data for official reports and compliance documentation.

100+

Products Delivered

50+

Industrial Clients

15+

Countries Served

10+

Years of Expertise

Contact Us

For product inquiries, technical support, or partnership opportunities, visit our official website.

13th Floor, Building 2, Yard 26, Chang'an Center, Financial Street, Shijingshan District, Beijing

+86-400-639-1125

admin@leshi-tech.com

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