Group 1 - The article highlights the increasing involvement of Chinese heavy machinery in infrastructure projects across Africa, particularly from Changsha, known as the manufacturing hub for engineering machinery [1] - SANY Group, a leading Chinese equipment manufacturer, showcased 17 products at the China-Africa Economic and Trade Expo, emphasizing its commitment to the African market with the theme "SANY Light Up Africa" [1][3] - SANY's exhibition featured a focus on renewable energy, including the establishment of the "SANY Africa Zero Carbon Technology Park," which demonstrated integrated solutions for microgrid construction [3] Group 2 - The SANY exhibition included a self-sufficient power supply system using high-efficiency solar panels and backup generators, showcasing the company's capability to adapt to the African market [3] - SANY Group and the SANY Foundation initiated a public welfare challenge at the expo, where participants could donate solar lamps to underprivileged areas in Africa, highlighting the company's social responsibility efforts [3] - Since entering the African market in 2002, SANY has established a service network across all 54 African countries, achieving over 20 billion yuan in sales and maintaining a fleet of over 23,000 units [3] Group 3 - Zoomlion Heavy Industry Science & Technology Co., Ltd. (Zoomlion) also participated in the expo, presenting over 10 products that cater to the construction and agricultural needs of Africa [5] - Zoomlion's products are designed to meet the specific performance and quality requirements of the African construction environment, attracting interest from various African clients [5] - With nearly 20 years of experience in Africa, Zoomlion has become one of the major exporters of construction and agricultural machinery, with over 10,000 units in the region [5]