Factory Tour

Filter Housings and Bags Production

CMI’s main manufacturing facility was first established in 2008 in Shanghai and then moved to QiDong in 2018, which is approximately 120 km from Shanghai.

The site covers approximately 6,500 m² and includes a filter housing workshop, filter bag workshop, warehouse, laboratory and office area. This integrated layout allows us to keep product development, production and quality control closely connected under one roof.

Our current capacity enables us to produce several thousand filter housings and hundreds of thousands of filter bags per year, supporting both project-based orders and regular repeat business from long-term customers.

The factory is certified to:

• ISO 9001:2015 – quality management
• ISO 14001:2015 – environmental management
• PED 2014/68/EU – pressure equipment directive (for relevant products)
• ASME manufacturing and calculation
• Kosher for filter bags
• EAC for Russia
• 3A for sanitary filters if required

Filter media and materials have been tested and certified by SGS, and are FDA-compliant where required, which is important for applications in water treatment, food & beverage and other sensitive processes.

Metal Filter Element Production

In parallel, CMI has invested in dedicated facilities for sintered metal filter elements. Our products are developed to benchmark against well-known international brands such as GKN (Germany) and MOTT (USA), and are used in industrial filtration, aeration, instrumentation and ultra-pure gas filtration.

To better control product quality, we produce most of the raw material powder in-house.

Our metal filter production line includes:

• Powder production – controlling raw material quality from the very beginning
• Powder screening and preparation area – controlling particle size distribution before forming
• Cold isostatic pressing (CIP) and tooling workshop – stable and repeatable green body forming
• High-temperature sintering furnaces – consistent pore structure and mechanical strength
• Welding and assembly workshop – reliable joining and end connections
• Machining workshop – precision dimensions, threads and customized interfaces

All metal filter elements are 100% bubble-point tested to verify pore size performance and integrity before shipment.

Our in-house laboratory supports:

• Microscopic analysis (pore structure and surface morphology)
• Permeability / air flow testing
• Scanning Electron Microscope (SEM)
• Optical Microscope
• Particle Size Analyzer
• Bubble Point Tester
• Elemental Analyzer
• Carbon-Sulfur Analyzer
• Universal Testing Machine
• Crushing Strength Tester
• Oxygen-Nitrogen Analyzer
• Salt Spray Tester
• Other functional tests as required by the application

These capabilities help us ensure that every batch of metal filters meets tighter internal standards and provides stable performance in critical service.

Visit Our Factory

We welcome distributors, EPC contractors, OEM partners, and end users to learn more about our manufacturing capability.

If an on-site visit is not convenient, we can also provide:

• Workshop photos
• Production videos
• Testing records
• Online factory introduction meetings

Work With CMI Filtration

Whether you need a reliable supplier, a custom fabrication partner, or long-term replacement support, CMI Filtration is ready to assist.