Group 1 - Shandong Province has announced a new list of 35 characteristic industrial clusters, highlighting the economic strengths of its 16 cities [3][4] - Jinan has 10 valid provincial characteristic industrial clusters, focusing on sectors such as artificial intelligence, high-end software, and digital economy [3] - Qingdao leads the province with 14 provincial characteristic industrial clusters and 6 national-level small and medium-sized enterprise clusters [3][4] Group 2 - New industrial clusters in Tai'an and other cities have increased the total number of provincial characteristic industrial clusters to 14, making it the highest in the province [4] - The engineering machinery industry is a key sector in Qingzhou, with a complete industrial chain led by Caterpillar and several supporting enterprises [5][6] - Qingzhou's engineering machinery cluster produced over 125,000 units in 2024, with a total output value exceeding 10 billion [6][7] Group 3 - Caterpillar remains the top global construction machinery manufacturer with a sales revenue of $37.84 billion, accounting for 15.9% of the total market [6] - The Qingzhou factory has evolved into a significant part of the global engineering machinery supply chain, employing over 2,200 professionals [7] - The corn industry cluster in Weifang has been recognized in the 2025 national advantageous characteristic industrial cluster construction list [7]