We invest over one million yuan in product research and development every year. We have already obtained more than 23 patented technologies, including 2 core invention patents! Relying on in-depth cooperation with well-known domestic universities and laboratories, we continuously optimize the filtration accuracy and service life of air filters to ensure that our products always maintain a leading position in the industry!

At Lijia, we firmly believe that industrial development and environmental protection can go hand in hand. As a responsible player in the filter industry, we consistently integrate environmental awareness into every stage — from product R&D and manufacturing to after-sales service — committing to green production and sustainable development.