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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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Ultra Filter System is applied in downstream purification and separation of biological products, removal of endotoxins in injections, desalination of small nucleic acid products, and solvent removal in the peptide industry, it can provide concentration and liquid exchange functions, as well as clarification and microfiltration. The filtration elements can be in the form of hollow fibers or membrane cartridges, and can also flexibly switch between ultrafiltration and nano-filtration process.
System Features
· Customized systems based on client production requirements (with in-house testing capabilities);
· Online CIP cleaning function;
· Online SIP sterilization function (except for ultrafiltration membranes);
· Automatic preparation, storage, and cleaning of membrane soaking solutions;
· Automatic water flux NWP testing function;
· Automatic implementation of multiple control modes such as TMP, feed flow rate, ΔP, and fixed pump speed, with custom control logic available upon request;
· Online integrity testing of membrane packages and generation related test reports;
· Precise temperature control function (especially crucial for protein, peptide, and small nucleic acid products, and also helpful for achieving better NWP);
· Flexible cleaning, sterilization, and production process combinations through PLC or DCS;
· Provision of 1:1 3D design models to meet operation, maintenance, and repair needs, while saving space;
· CGMP-compliant automated control system (PLC);
· DQ/IQ/OQ/RA/CCA/RTM and other validation works.
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Dedicated to providing customers with consulting, design, manufacturing, construction, commissioning, and validation services.
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Headquarters Address: No. 156, Xixie Road, Xinwu District, Wuxi City, Jiangsu Province
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