
SHANDONG TONGJIA MACHINERY CO.,LTD manufactures plastic machinery including extrusion, blow molding, and injection molding equipment, serving customers across China and international markets with a strong innovation focus.
SHANDONG TONGJIA MACHINERY CO.,LTD is a plastic machinery manufacturer based in the National High-Tech Industrial Development Zone of Jining City, Shandong Province. The company develops and produces a broad portfolio of equipment, including plastic extrusion machines, blow molding machines, and plastic injection molding machines, as well as complete production lines for geogrid, geomembrane, plastic net, foam and sheet applications.
With dedicated technical centers at national and provincial level, Tongjia emphasizes product development and engineering capability. The company has developed more than 180 new plastic machinery products across 9 categories, with multiple innovations recognized through patents and science and technology awards at municipal and provincial level.
Tongjia operates on a large manufacturing footprint, with a stated factory area of 180,000 square meters and a floor space of 200,000 m². Its products are supplied nationwide and exported to over 60 countries and regions, supporting customers in sectors such as water conservancy, environmental protection, construction, mining, agriculture, and industrial packaging.
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