Tamil Nadu is a leading industrial hub in India, attracting foreign investment due to its strong infrastructure, logistics, and diverse manufacturing sector, including automobiles, aerospace, pharmaceuticals, textiles, electronics, and chemicals. The state has the second-highest GDP in India and houses the largest number of factory units (37,220), contributing 20% of India’s electronics production. It has a high concentration of Special Economic Zones (SEZs), accounting for one-third of the state’s exports, with key industrial estates like **Ambattur, Sriperumbudur, and Oragadam**. The **Tamil Nadu Small Industries Development Corporation (TANSIDCO)**, established in 1970, supports **MSMEs** by maintaining **41 Government Industrial Estates and 87 TANSIDCO Industrial Estates**, offering developed plots (5 cents to 1 acre) and various support services such as cluster development, technical guidance, and raw material assistance. Notable industrial estates include **Ambattur (one of Asia’s largest MSME hubs), Guindy (India’s first industrial estate), Sriperumbudur (home to Hyundai, Foxconn, and Samsung), Oragadam (major automotive hub), Irungattukottai (Renault-Nissan, BMW), and Vallam Vadagal (aerospace and defense industries).** These estates provide world-class infrastructure, including **reliable power, developed plots, common facility centers, strong connectivity (highways, ports, airports), 24/7 security, water supply, stormwater drains, sewage systems, green belts, and parks**, fostering a robust environment for industrial growth.