PT Indospring Tbk PT Indospring Tbk manufactures leaf springs, coil springs, and stabilizer bars for the automotive industry, producing these components through both cold and hot processes under licenses from Mitsubishi Steel Manufacturing and Murata Spring Co. Ltd. of Japan. The company serves original equipment manufacturers (OEMs), assemblers (ATPM), and aftermarket customers with products including engine valve springs; it also operates in related areas through subsidiaries such as rolling mills for flat and round special steel billets. Headquartered in Gresik, East Java, Indonesia, since its founding in 1978 as a subsidiary of PT Indoprima Gemilang within the Indoprima Group, PT Indospring Tbk exports to 19 countries including Australia, Canada, Japan, the United States, and various Southeast Asian and Latin American markets, while maintaining strong domestic sales in Indonesia. The company employs approximately 2,631 people and focuses on automotive spare parts for passenger vehicles, commercial trucks, and agricultural equipment. In recent developments, PT Indospring Tbk reports modest net sales revenue growth of 0.29% in Q2 2025 alongside a 2.03% increase in total assets, though its net profit margin experienced a slight decline of 0.02% during the year; it continues to emphasize productivity enhancements through initiatives like Best Employee of the Month awards and community programs such as fogging and tree planting in 2022, with no major acquisitions, partnerships, or product launches announced in the past 1-2 years.