Shandong Tongjia Heavy Industry Co., Ltd. is a vice president unit of the China Plastics Machinery Industry Association, a vice chairman unit of the China Plastics Processing Industry Association, an advanced unit in technological innovation of the national light industry system, a key national technology enterprise, and a star enterprise with outstanding patent achievements in Shandong Province. The company owns one national-level plastic forming equipment engineering and technology center and three Shandong provincial engineering and technology centers. It ranks second in China in comprehensive strength of plastic machinery. Shandong Tongjia is the largest green energy-saving plastic hollowing machine R&D and production base, and also the largest servo energy-saving injection molding machine R&D and production base in the north of the Yangtze River. The company has successively developed nine categories and more than 200 specifications of plastic machinery equipment with international advanced levels, among which multiple products have filled domestic blanks. The company holds over 370 national patents and has won several provincial and ministerial level scientific and technological progress awards. The company's products have passed EU CE certification, GD/T19000 quality system certification, GD/T24001 environmental management certification, and GD/T28001 occupational safety system certification. Tongjia products are distributed nationwide and exported to more than 80 countries and regions including the United States, Spain, Greece, Russia, South Africa, Brazil, etc., and trademarks have been registered in 53 countries and regions.