Shandong Dajie filter Co., Ltd. is a technology-based enterprise focusing on the R & D, production, sales and service of air filtration and purification products. The production and R & D center is located in Zhangqiu District, Jinan City, Shandong Province. At present, our main products include all kinds of primary efficiency, medium efficiency filters, sub-high efficiency, high efficiency and ultra-high efficiency filters, liquid tank filters, chemical filters, activated carbon filters, FFU, high-efficiency air supply outlets, etc. Taking air purification as our own responsibility, Dajie has introduced professional production equipment in the industry, adopted professional production technology, advanced information technology and management methods to continuously optimize air filtration products. In addition, we’re committed to becoming an integrated supplier of clean technology solutions in the air purification industry.