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Because of technological developments related to the products, systems, and/or services described herein, the data and procedures are subject to change without notice.

Great Wall has strong sales team throughout the world. Please consult your Great Wall representative for more information

Find our depth filter brochures and flyers to download here. You can find information about all of our filtering products (such as filters, modules and sheets) for the medical, life sciences, biotechnology, food and beverage industries.

We fulfill our responsibility by ensuring that our products meet national and international quality standards, and manufacturing is in accordance with the rules of Quality Management System ISO 9001 and Environmental Management System ISO 14001.

This certification verifies that a fully functioning comprehensive Quality Assurance System covering product development, contract controls, supplier selection, receiving inspections, production, final inspection, inventory management, and shipment has been implemented. The raw materials used in production are submitted to specific controls. In addition, continuous and repeated tests are carried out during the manufacturing process. Stringent quality and environment control during manufacturing ensures high quality standards and cleanliness of the Great Wall filter media, thus meeting the special requirements of our customers. Our products are verified and certified by an independent external institute to demonstrate our suitability for the food industry.

We also have a lot of specific certificates which are available upon request.

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