

Weifang Duohui Intelligent Manufacturing Technology Co., Ltd. has been deeply engaged in the field of dredging and cleaning equipment. With its strong R&D capabilities as the core, it focuses on the research, manufacturing, and full-chain sales of high-quality dredging equipment. By leveraging a mature technical system and intelligent manufacturing capabilities, it has developed engineering equipment suitable for various scenarios.
The product is widely used in various water conservancy projects such as river dredging, waterway excavation, port construction, and reservoir management. The main business includes a full range of core equipment: dredging vessels, amphibious multi-functional dredging vessels, environmental clean-up vessels, high-concentration clean-up vessels, grass-cutting vessels, soft foundation spiral multi-functional platforms, as well as salt mine mining vessels, large tin mining vessels, powerful mixing and solidification machines, mud solidification equipment, and gold selection equipment for sand mines, etc. These are various types of special engineering equipment for special projects. With technology, it empowers construction projects and fully meets the high-standard operation requirements in multiple fields such as water conservancy, mining, and environmental protection.
Thailand's booming construction, infrastructure, and mining sectors are driving unprecedented demand for advanced sand washing and dredging solutions across the country.
Thailand's Eastern Economic Corridor (EEC) megaproject, high-speed rail expansion, and rapid urbanization in Bangkok and secondary cities have created a surging demand for quality sand aggregates. The country processes over 100 million tonnes of sand annually, making advanced washing and dredging equipment a critical industrial necessity.
Thailand's government is investing heavily in its National Transport Infrastructure Plan (2023–2037), with over THB 2.7 trillion allocated to roads, rail, ports, and airports. Each project demands massive volumes of washed sand and gravel, creating a continuous market for high-output sand washing equipment throughout the country.
Major Thai river systems — including the Chao Phraya, Mekong, Ping, Wang, Yom, and Nan rivers — are primary sources of natural sand. Regulatory tightening on riverbed extraction has pushed operators toward more efficient, environmentally compliant dredging vessels that minimize ecological disruption while maximizing yield.
Laem Chabang Port Phase 3, Map Ta Phut Industrial Estate expansions, and coastal reclamation projects in the Gulf of Thailand require advanced cutter suction dredgers and sand washing systems capable of handling high-salinity marine environments with consistent performance and low maintenance costs.
From northern highland rivers to southern coastal zones, our dredging and sand washing equipment is engineered to handle Thailand's diverse terrain and water conditions.
Dredging & sand extraction in the central plains for Bangkok's construction supply chain and flood management programs.
Compact mini dredgers for Chiang Mai, Chiang Rai & Mae Klong shallow waterways with customizable hull designs.
High-volume sand supply for Rayong, Chonburi & Chachoengsao industrial estate construction and land reclamation.
Corrosion-resistant dredgers for Phuket, Krabi & Songkhla coastal maintenance, port deepening & beach nourishment.
Silt removal and capacity restoration for major reservoirs including Bhumibol & Sirikit dams using amphibious platforms.
Environmental clean-up vessels for Bangkok's canal network (khlongs), improving drainage and water quality in urban areas.
Specialized tin mining dredgers for Phuket & Phang Nga offshore zones, continuing Thailand's legacy mineral extraction industry.
Eco-friendly grass-cutting and clean-up vessels for mangrove zone restoration and Ramsar wetland conservation projects.
The Thai sand washing and dredging sector is undergoing rapid transformation, driven by regulatory reforms, technology adoption, and sustainability mandates.
Thai operators are increasingly adopting fully automated dredging vessels with GPS positioning, remote monitoring dashboards, and AI-assisted sediment analysis to improve output accuracy and reduce labor dependency in remote extraction sites.
Thailand's Department of Water Resources (DWR) has tightened riverbed extraction permits since 2022. Operators must now deploy low-turbidity, low-noise equipment with real-time environmental monitoring to maintain compliance and avoid costly shutdowns.
Given Thailand's seasonal flooding and diverse geography, demand for disassemblable, container-transportable dredging units is surging. Operators need equipment that can be rapidly deployed and relocated across multiple project sites during a single season.
Chinese-manufactured dredging and sand washing equipment is capturing significant market share in Thailand due to competitive pricing, advanced technology, and flexible ODM customization. Thai contractors report 30–45% cost savings compared to European alternatives without compromising performance.
Solar-hybrid and electric-assist dredging vessels are entering the Thai market, aligned with Thailand's Bio-Circular-Green (BCG) Economy Model. Operators in protected waterway zones are prioritizing zero-emission equipment to meet national sustainability targets.
The trend is moving away from standalone dredgers toward complete sand processing systems — combining extraction, washing, classification, and dewatering in a single integrated workflow. This reduces site footprint and improves the quality consistency of finished sand products.
As a direct ODM manufacturer, we eliminate middlemen and offer competitive factory-gate pricing with full customization to meet Thailand's specific project requirements and local operating conditions.
Every vessel and system can be engineered to your specifications — hull dimensions, pump capacity, automation level, power source, and material grade — ensuring perfect fit for Thailand's rivers, coasts, and mining zones.
Our disassemblable designs and container-friendly packaging enable swift sea freight to Bangkok, Laem Chabang, or any Thai port, with on-site assembly support and commissioning services available.
Built with high-strength wear-resistant steel and corrosion-protected components, our equipment withstands Thailand's tropical climate, monsoon conditions, and abrasive sand environments for years of reliable operation.
Cutting-edge intelligent control systems, remote diagnostics, and automated operation modules ensure maximum efficiency and minimal downtime, even in remote Thai extraction sites far from service centers.
Dedicated technical support for Southeast Asian markets, with spare parts inventory, online troubleshooting, and field service engineers available to ensure continuous operation across all Thai project sites.
Explore our full lineup of industrial dredging and sand extraction vessels — each engineered for performance, durability, and adaptability to Thailand's unique waterway environments.



Whether you're operating in Bangkok's waterways, the EEC industrial zone, or remote northern rivers — our engineering team will design the optimal sand washing and dredging solution for your exact requirements.
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