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About us

We are service and solution provider with nearly 40 years of experience in environmental dredging equipment solutions.

Qingzhou Yongsheng Environmental Dredging Equipment Co., Ltd.

Our market covers over 80 countries.
Qingzhou Yongsheng Environmental Dredging Equipment Co., Ltd. was founded in 1990 by Mr. Wang Yongsheng, the company's chairman. It was one of the pioneering manufacturers specialized in the design and manufacturing the sand mining and dredging machinery in Qingzhou City, and is awarded as one of the top ten iconic brands in China's dredging industry. For Yongsheng company, its development history is also a history of entrepreneurship. The company successfully developed the first sand dredger in 1993. Since then, more than 100 products in 6 major series has been successively developed including sand mining and sand making equipment, dredger product series, small and medium-sized dredging equipment, mineral processing equipment, offshore vessels, sludge treatment equipment, etc. Among them, the small and medium-sized cutter suction dredger series has made significant contributions to the dredging industry as one of the company's main product. As the main force driving the development of the domestic dredging industry, the dredgers are sold well in over 80 countries and regions, making great contributions to promoting local economic development and earning foreign exchange for our country. In 2014, Shandong Haohai Dredging Equipment Co., Ltd. was established in response to the national pollution control policies (the national "Water Ten Articles" and "Soil Ten Articles" plans). Focusing on the R & D of dredging vessels and sludge treatment equipment, Haohai Brand specializes in research and development of high quality equipment and vessels as oriented subsidiary of Yongsheng.
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Our market covers over 80 countries.

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We have nearly 40 years of industry experience.

1990 Y

The company was founded in 1990

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We offer more than 100 types of products.

Our company has obtained the ISO9001 International Quality Management System Certification and ship production and operation license, and been awarded with multiple honorary certificates owning

The management of the company attaches great importance to the construction of scientific research capabilities. In 2004, the company began the cooperation with 708 Research Institute and Jiangsu Ship Design and Research Institute, and reached strategic cooperation agreements with Power China Northwest Engineering Corporation Limited and CCCC Tianjin Dredging Co., Ltd. Currently, the Technical Institute has 5 senior engineers and 12 R&D personnel capable of swiftly formulate reasonable and feasible solutions based on the customer's work site and customized requirements. The newly developed sand making machinery has been applied by the national key project, Qingdao-Huangdao Cross Sea Bridge. The tin ore panning equipment has been chosen by Indonesian customers. The dredger with flow capacity of 5500m³ has been adopted by China Railway 20th Bureau Group Co., Ltd. The dredgers are applied by the second airport of the Maldives to complete the reclamation project. These achievement have brought substantial economic benefits to the project owners. The newly developed large, medium and small sized dredgers have been widely adopted by many countries in the world for river dredging.
Our products cover more than 100 products in over ten major series, including sand mining machinery, dredgers, tin ore dredge vessel, sludge treatment equipment, mineral processing machinery, sand suction dredgers, self-loading and self- unloading sand barge, powder extraction machinery, gold panning vessel, sand washing machinery with high standard, logistic barge, stone crushing machinery, large and medium-sized dredging vessels, sprinkler vessels, etc.
Product quality is the lifeblood of an enterprise. We set high standards for the quality of each product. The company has introduced dozens of equipment such as large CNC machine tools and plasma cutting machines, etc. All products undergo strict testing and inspections before delivery from the factory to ensure that every product delivered to customers is of excellent quality. With a total of 150 staff members and 3 districts, our company is rapidly grown to be one of China’s largest manufacturing base for sand mining machinery, dredgers, and mineral machinery.
Qualifications and Honors

Obtaining ISO9001 International Quality Management System Certification and holding a Ship Production & Operation license

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Development History

SINCE 1990

  • 2025
    In 2025, the fifth generation of New Mud King was successfully upgraded and exported to South America.
  • 2024
    In 2024, 7 cutter suction dredgers were exported to India, achieving an 85% market share in the Indian market. The export volume in the same year amounted to 50 million yuan, setting a new historical high.
  • 2023
    In 2023, the company participated in the water ecological restoration project of the Yanghe Reservoir in Huailai County, Zhangjiakou City, Hebei Province.
  • 2022
    In 2022, multiple dredgers and multi-functional boats were exported to Africa and South America. Sales in the same year increased by 20%.
  • 2021
    In 2021, 5 cutter suction dredgers were exported to India, taking up a 55% market share in India. The export volume exceeded 35 million yuan.
  • 2020
    In 2020, three cutter suction dredgers of 4000 m³/h water flow were sent to Bangladesh, opening up the Bangladeshi market. The New Mud King(multifunctional amphibious dredger) was sold to Indonesia. The annual export volume exceeded 30 million yuan.
  • 2019.08
    The Offshore Platform was successfully developed and delivered to Egypt for laying undersea optical cables.
  • 2019
    In 2019, 5 dredgers with ZC certificates were produced for China Railway 20th Bureau Group Co., Ltd.
  • 2018
    In 2018, the large scale improved port dredger with national ZC Class Certificate was successfully put into operation.
  • 2016
    In 2016, the Logistic Platform Barge was successfully produced for Guyana (French).
  • 2014
    In 2014, the Self-Propelled Trailing Suction Hopper Dredger was successfully developed.
  • 2013
    In 2013, the 300 ton Bucket Sand Dredger was successfully developed and obtained the national inspection certificate.
  • 2011
    In 2011, the improved Suction Dredger was successfully developed, obtaining the European CE certification, and was exported to Poland. By the end of 2019, this Polish customer had repurchased 8 identical dredger.
  • 2010
    In 2010, the company customized the first CSD300 dismountable cutter suction dredger for the Heilongjiang Waterway Bureau, which obtained the national ZC Class Certificate.
  • 2008
    In 2008, the improved crawler type Amphibious Salt Mining Vessel was successfully developed. As a heavy duty equipment for mining natural salt mines, it saved a lot of manpower and material resources for customers as a revolutionary product in the salt mining industry.
  • 2008
    In 2008, the first cutter suction dredger was exported to India.
  • 2008
    In 2008, the first 4000 m³/h cutter suction dredger was sold to Nigeria.
  • 2006
    In 2006, the agitating sluice box and water jacket Gold Mining Machine were successfully developed. In 2006, our company established a new factory in Huanglou New Officeto to expand production. In the same year, the company’s products began to be exported to Nigeria.
  • 2003
    In 2003, the river magnetic separation ship was successfully developed, installing a magnetic separator on a sand dredger. Since then, most domestic rivers containing iron powder have chosen this equipment to select iron concentrate.
  • 2001
    In 2001, the vibrating screen and water washing wheel were successfully developed and have been used on the equipment still now.
  • 2000
    In 2000, the four-wheel walking excavator was successfully developed in cooperation with the Beijing Academy of Agricultural Sciences.
  • 1999
    In 1999, the second generation Bucket Dredger was successfully developed. More than 80% of the components such as the bucket, chain, pin, gantry, hull structure, screening structure, and keel, were improved and tested successfully and have been in use ever since.
  • 1997
    In 1997, the Chain Bucket Gold Mining Dredger was produced, using technologies such as gold adhering felt.
  • 1995
    In 1995, the Sand Dredger was successfully updated with application of the gearbox, reverse gearbox, and screening parts.
  • 1990-1993
    From 1990 to 1993, the first dismoutable Bucket Sand Dredger was successfully developed and manufactured, addressing the unmet product needs domestically and globally.
corporate culture
We possess a rigorous quality assurance system and scientific management system.
  • Corporate Vision To become a globally renowned supplier of environmental protection silt removal equipment solutions
  • Corporate mission We will develop high-quality products to help customers realize their value and jointly contribute to society
  • Corporate responsibility Contribute to the country, create value for society, create value for customers, and achieve the value of employees
  • Corporate philosophy Passion, innovation, excellence