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Company Profile
Doromil (Beijing) Separation Technology Co., Ltd is the subsidiary of RIGHTLEDER INTERNATIONAL HOLDING GROUP, which specializes in the fields of seawater desalination, concentration & separation, reclaimed water system, ultrapure water system and water treatment chemicals, is an integrated environmental solution provider of research & development, design, equipment manufacture, engineering construction, operation and services. Doromil has passed ISO9001 quality system certification, ISO14001 environment system certification, OHSAS18001 occupational health and safety management systems and CE certification; as well as the secondary qualification of environmental engineering general contracting, secondary qualification of electromechnical engineering installation; Meanwhile, Doromil is the national recognized high-tech enterprise, the joint research & development center and postgraduate training base of Shenyang University of Technology and the standing council unit of Environmental Science Institute of Liaoning Province.

Doromil has three manufacture bases and four research & development centers in China with Beijing as the marketing center radiating across the whole country, whose products have occupied more than 30% of domestic market. The overseas water treatment markets have been expended in recent years, which have entered the markets of Southeast Asia, Africa, the Middle East, Central Asia and South America etc.

From research & development, equipment manufacture, engineering construction, operation maintenance, Doromil adheres to the service principle of "scientific innovation, technological priority and people oriented". The goal is to be the trustworthy service provider, and provide the customers with affordable and high cost-performance as well as effective environmental protection solutions.

We Doromil believe that only high quality products would support our brand.


Officially entered the civilian drinking water field
Rapid development on catering and drinking water field
Established domestic water purification equipment e-commerce platform
Designed and manufactured the first set water treatment equipment
Built the first special technical project team
Successful operation of independent patent (membrane technology) pilot plant
Partner of Veolia in China
Successful application of membrane separation system in biological preparation
Established membrane separation technology R&D center
Established the major environmental protection-oriented development tendency
Established the first membrane technical support service center in Northeast
The first set of phthalic anhydride wastewater zero-discharge system delivered
The first set of new energy-saving full-ion exchange system delivered
American ASTM electronic grade PPT ultra-pure water system delivered
China's first TFT grind wastewater equipment delivered
Innovations and patents reached 100 items, the patent protection plan officially launched
The first set of brine decolorization recovery system delivered
Bid winner of the South American desalination project
Introduced partnership mode, the "honeycomb" framework officially initiated
Passed the OHSAS18001 certification
Established the northeast marketing center
Established the Shenyang experimental and manufacturing base
Established industrial water treatment e-commerce platform
Introduced strategic technical cooperation shareholders
Successful operation of LTLD-UPW new ultrapure water device
CSM membrane technology application partner in China
Established independent pressure vessel factory
Passed the ISO14001, ISO9001 quality management system certification
Established the international trade department
Successful application of French ultrapure water technology to the electronics industry
Established zero-discharge R&D center, started pilot projects in 3 major fields
Established fluid separation R&D center, started pilot programs in 4major industries
90% recovery rate achieved in reverse osmosis system, the curve micro-power membrane technology device delivered
Established joint R&D laboratories with Shenyang University of Technology
Membrane element manufacturing plant officially put into production
The first set of high temperature and high salt wastewater treatment system delivered
The first set advanced oxidation technology obtained special funds from government
140 patents applied
Passed the CE certification
Overseas markets put into operation
Established South American division
Four logistics centers established
EL leasing model exceeded 3 million yuan
Japan, Germany mutual enterprise partner
Separation technology broke through the limits of biotechnology once again
Invited to participate in the Amsterdam International Water Exhibition in Shanghai
Rewarded with the title of the Shenyang enterprise technology center