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About Us
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Products & Services
Purified Water Preparation System Water for Injection Preparation System 
Ambient Membrane WFI Preparation System Pure Steam Generator 
Bioreactor Upstream/Downstream Piping & Tanks 
High-Pressure Homogenizer System Ultrafiltration System 
Sanitary-grade container Electrolytic Ozone Generator 
Hygienic Bottom-Mount Magnetic Stirrer Sanitary Centrifugal Pump For process gas systems—including process compressed air, nitrogen (N2), oxygen (O2), carbon dioxide (CO2), and specialty gases—Welkin provides secondary design, fabrication, installation, commissioning, and validation services. These services are capable of meeting the requirements of domestic and international projects regulated by the FDA, WHO, EMEA, NMPA, and other authorities.
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Welkin can provide tailored powder or liquid dosing and blending systems that meet the requirements of the pharmaceutical, food, and beverage industries, customized to clients’ specific processes.
• Added to the pipeline mixing pump via a powder metering and feeding system for online mixing.
• Pre-mixing prior to addition to the circulating pump pipeline via a mechanical diaphragm metering pump
• OtherWelkin provides customers with customized solutions, encompassing project design, procurement, manufacturing, construction and commissioning, as well as validation services.
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Welkin adheres to the service philosophy of “comprehensive, high-quality, and rapid,” providing convenient and efficient technical and service support for customers’ system operations and promptly resolving any issues that arise during the after-sales process.
• Professional maintenance and repair services are provided during the warranty period;
• Provide professional and ongoing training services;
• We have a professional technical team that responds promptly and provides on-site service.
• Free provision of our in-house developed remote cloud service, enabling remote monitoring via the mobile app;
• A well-stocked inventory of spare parts is maintained to ensure convenient and timely component replacement over the long term, thereby guaranteeing the reliable operation of customers’ equipment.
Domestic after-sales service network coverage:
• Headquarters and Production Base: Wuxi
• Shanghai Branch: Shanghai
• Southeast Region: Guangzhou
• Southwest Region: Chengdu
• North China Region: Beijing -
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Our Commitment
We are actively responding to the global transition toward a carbon-neutral economy and are committed to technological optimization and innovation to reduce greenhouse gas emissions and improve energy efficiency.
The products we offer our customers not only deliver superior performance and enhanced stability, but also excel in energy efficiency, reduced energy consumption, and lower pollutant emissions.
At the same time, our company has consistently regarded green practices, energy conservation, and emissions reduction as an integral part of our daily production operations and project management.
Our Achievements
Carbon Footprint and Greenhouse Gas System Audit Report
Welkin Industrial 520 kW Rooftop Distributed Photovoltaic Power Generation Project
Support customers
Typical Cases
A domestic client:
12 m³/hr HPW ultrapure water system
(Full-membrane technology, with product water meeting the standards for water for injection.
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Water conservation, energy conservation
All-Membrane Injectable Water System: This system produces injectable water using the following methods, with ozone-based sterilization employed for storage and distribution. The entire system incorporates PAT-enabled, end-to-end process monitoring to ensure that the quality of the produced injectable water meets or exceeds pharmacopoeial requirements.
Pre-treatment: Nanofiltration (NF) + Medium-Pressure Ultraviolet (UV) + Reverse Osmosis (RO)/2RO + Electrodeionization (EDI) + Terminal Ultrafiltration (UF)
Pre-treatment: Ultrafiltration/RO for improved drinking water + UV & RO + EDI + Terminal UF/NF
MMF+ dual softeners + pre-treatment ultrafiltration + UV & 2RO + EDI + terminal UF
Advantages of membrane-based water for injection:
By replacing traditional industrial steam evaporation, operating costs can be reduced by more than 75%.
Reduce investment costs
It has the potential to improve water quality and can help avoid the risk of red rust formation associated with distillation.
Reduces the floor space and height requirements for the plant room where the water chiller is installed.
Typical Cases
A biopharmaceutical client in Southeast Asia
Four-Unit Pilot-Scale Bioreactor CDMO
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Biotechnology
The production of drugs such as antibodies, recombinant proteins, vaccines, and insulin via cell culture or bacterial fermentation, as well as novel cultured animal-cell meat and medical‑grade collagen products, offers the following advantages over chemical synthesis:
Environmentally friendly and free of chemical solvents, it helps reduce wastewater and exhaust emissions.
The fermentation method offers high yield and large production capacity.
Fermentation is highly safe and significantly reduces the risk of by-products or chiral isomers.
The raw material costs for fermentation are relatively low.
Typical Cases
A vaccine client in Southeast Asia
300 kg/h WFI/PS Integrated Unit
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Zero-carbon technology
Electric-heated pure steam water-for-injection integrated unit:
Replacing industrial steam with green electricity as an energy source can significantly reduce carbon emissions and conserve energy.
The investment cost is lower than that of industrial steam distillation.
The equipment has a low overall height, requiring minimal installation space in the plant building.
Dedicated to providing customers with consulting, design, manufacturing, construction, commissioning, and validation services.
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E-MAIL:
Headquarters Address: No. 156, Xixie Road, Xinwu District, Wuxi City, Jiangsu Province
Copyright © 2025 Welkin Industry System Engineering Co.,Ltd.
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