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About Us

Jianjia Heavy Industry focuses on the research and development, leasing, and aftermarket services of construction machinery. Its core products include small and medium-sized excavators, loaders, and specialized equipment for tunnel construction. We reduce equipment maintenance complexity through modular design and provide a flexible cooperation model of "renting instead of selling" to help customers cope with schedule fluctuations and financial pressures.
The company has provided equipment support for road, water conservancy, and municipal projects in 12 provinces in China, with an average fault free working time of equipment exceeding the industry standard by 22%.

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New Products

Original Komatsu Used PC45mr-2 PC45 Second Hand Excavator with High Quality

Original Komatsu Used PC45mr-2 PC45 Second Hand Excavator with High Quality

Factory Sale 2000kg Small Digger Miniexcavadora/Excavadora/Mini Excavator

Factory Sale 2000kg Small Digger Miniexcavadora/Excavadora/Mini Excavator

1 Ton Mini Digger Shovel

1 Ton Mini Digger Shovel

Used Good Quality/80% New/Cat 312bcat 320d/320c/325c/330c Crawler Excavator Excavadora De Cadenas Usada De Buena Calidad / 80% Nuevo

Used Good Quality/80% New/Cat 312bcat 320d/320c/325c/330c Crawler Excavator Excavadora De Cadenas Usada De Buena Calidad / 80% Nuevo

Factory Supply Concrete Batching Plant with Higher Accuracy

Factory Supply Concrete Batching Plant with Higher Accuracy

Used Wonderful Working Condition Japan 35 Ton Crawler Excavator Kobelco Sk350LC-8 Digger for Sale

Used Wonderful Working Condition Japan 35 Ton Crawler Excavator Kobelco Sk350LC-8 Digger for Sale

6 Inches Hollow Block Making Machine in Jamaica Qt4-24 Concrete Pavement Brick Machine

6 Inches Hollow Block Making Machine in Jamaica Qt4-24 Concrete Pavement Brick Machine

Qt8-15 Automatic Paver Block Machine for Road Pavement

Qt8-15 Automatic Paver Block Machine for Road Pavement

News

  • What Is Lamination Power Press and Why Is It Essential for Modern Manufacturing?
  • How Can a Large Outdoor Storage Silo Optimize Your Bulk Material Management?
  • How Does a Refrigerated Air Dryer Work?
  • How Does High Efficiency Cooling Water Chiller Improve Industrial Cooling Performance?
  • How Does an Adsorption Air Dryer Improve Compressed Air Quality?
  • How Do Thermal Expansion and Contraction Affect Long Span Steel Structure Purlins
  • How Does a Dirty Water Submersible Pump Work?
  • How Does High Voltage Switchgear Improve Electrical System Safety?

  • What Is Lamination Power Press and Why Is It Essential for Modern Manufacturing?

    ​In today's rapidly evolving industrial landscape, efficiency, precision, and durability are critical factors for manufacturers aiming to stay competitive. Among the various technologies driving production excellence, the Lamination Power Press stands out as a key piece of equipment. It plays a crucial role in shaping, bonding, and forming laminated materials used across industries such as automotive, electronics, construction, and packaging. Companies like Zhejiang ETONE Precision Machine Co., Ltd. are at the forefront of delivering advanced solutions that enhance productivity while maintaining high-quality standards.

  • How Can a Large Outdoor Storage Silo Optimize Your Bulk Material Management?

    Large outdoor storage silos play a critical role in efficient bulk material storage and handling. This article explores the benefits, design considerations, installation tips, and maintenance practices for large outdoor silos, helping industries maximize storage efficiency while minimizing operational risks.

  • How Does a Refrigerated Air Dryer Work?

    A Refrigerated Air Dryer is an essential component in compressed air systems, designed to remove moisture and prevent damage to pneumatic equipment, pipelines, and production processes. Excess humidity in compressed air can lead to corrosion, product contamination, equipment failure, and increased maintenance costs. This article explains how refrigerated air dryers work, their core components, benefits, applications, selection criteria, and maintenance practices. It is designed to help industrial users, engineers, and procurement specialists make informed decisions when choosing a reliable air treatment solution.

  • How Does High Efficiency Cooling Water Chiller Improve Industrial Cooling Performance?

    High Efficiency Cooling Water Chillers are critical systems widely used in industrial manufacturing, HVAC systems, data centers, chemical processing, and precision engineering environments. This article explains how these advanced cooling systems work, why they are essential for modern industries, and how they solve key operational pain points such as energy waste, unstable cooling output, and high maintenance costs. It also highlights optimization strategies, maintenance practices, and real-world applications provided by AQWK, a trusted provider of industrial cooling solutions.

  • How Does an Adsorption Air Dryer Improve Compressed Air Quality?

    An adsorption air dryer is a critical component in compressed air systems designed to remove moisture and prevent damage caused by water vapor. This article explains how adsorption air dryers work, their internal structure, benefits, applications, and how to select and maintain the right system. It also highlights common industrial pain points and how reliable solutions from Dechuan Compressor can improve system efficiency, reduce downtime, and enhance production quality.

  • How Do Thermal Expansion and Contraction Affect Long Span Steel Structure Purlins

    When designing large industrial or commercial roofs, Steel Structure Purlin systems must withstand constant thermal movement. At Liweiyuan, we have observed that temperature fluctuations cause long span purlins to expand in heat and contract in cold, leading to accumulated stress, fastener fatigue, and roof sheet misalignment if not properly engineered.

  • How Does a Dirty Water Submersible Pump Work?

    Dirty water management is a persistent challenge across construction sites, agriculture, basements, and industrial environments. A Dirty Water Submersible Pump is engineered to handle water mixed with solids, debris, and sludge—conditions where standard pumps fail. This article explores how these pumps operate, what problems they solve, how to choose the right model, and how to maximize performance and lifespan. Whether you're dealing with flooding, wastewater, or drainage, this guide provides actionable insights to help you make informed decisions.

  • How Does High Voltage Switchgear Improve Electrical System Safety?

    High voltage switchgear is a critical component in modern electrical systems, designed to control, protect, and isolate electrical equipment. This article explores its operation, key benefits, types, and maintenance practices to ensure reliability and safety in industrial and commercial applications.

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