Bank Mandiri Taspen, also known as Bank Mantap, is a subsidiary of Bank Mandiri that provides banking services specifically for retired civil servants (PNS) and military personnel (TNI / Polri). Established on February 23, 1970, as Bank Pasar Sinar Harapan Bali, it has undergone several transformations over the years. Initially a cooperative, it became a limited liability company (PT) on November 3, 1992, and later transformed into a full-fledged bank.
In 2008, Bank Mandiri acquired Bank Sinar Harapan Bali, leading to a restructuring process that involved Bank Mandiri, PT Taspen, and PT Pos Indonesia. This restructuring resulted in the renaming of the bank to PT Bank Mandiri Taspen Pos on August 7, 2015, and later to PT Bank Mandiri Taspen on October 9, 2017.
Bank Mandiri Taspen offers a variety of financial products and services tailored to the needs of its target customers, including savings accounts, deposits, loans, gold pawn services, and bill payment platforms. The bank is committed to supporting the financial well-being of retired civil servants and military personnel, helping them maintain a stable income even after retirement.

PT Patra Drilling Contractor (PDC) is a national company in Indonesia that specializes in providing drilling services for the oil and gas industry. Established on September 11, 1981, PDC was the first Indonesian company to offer offshore drilling services, marking a significant milestone in the country’s energy sector. Headquartered in Jakarta, PDC has grown into a reputable service provider with a workforce ranging from 1,001 to 5,000 employees. Over the years, the company has expanded its capabilities to include onshore drilling support, auxiliary well services, and integrated support functions such as catering and logistics.

PT Astra Daihatsu Motor (ADM) is one of Indonesia’s leading automotive manufacturers, operating as a joint venture between Daihatsu Motor Co., Ltd., Astra International, and Toyota Tsusho. Established in 1992 through the merger of three companies - PT Daihatsu Indonesia, PT Daihatsu Engine Manufacturing Indonesia, and PT National Astra Motor - ADM has grown into the largest car manufacturer in Indonesia by production output and installed capacity. The company plays a pivotal role in the development, production, and distribution of compact vehicles tailored to the Indonesian market.

PT Elnusa Tbk is present in the energy industry with understanding that this industry is one of the main pillars of our country and continuously improves the service and quality of our service. One of the efforts to strengthen the existence of the company, we assign ourselves to be an integrated energy services company that provides total solutions. Along with a strong commitment and continuous innovation, the company's contribution will be progressively visible in the oil and gas industry.
PT Elnusa Tbk continues to focus on business and company growth with dynamic conditions and challenges. We always administer the company to always prioritize the principle of Total Solution. We apply this principle to strengthen the company position that always thrives according to need. Furthermore, we also direct the company to always strive to improve the quality of human resources to support the company's development so that company could grow more rapidly.

PT Alamtri Resources Indonesia Tbk. is a prominent Indonesian public company engaged in the integrated mining and energy sector. Formerly known as PT Adaro Energy Indonesia Tbk., the company underwent a rebranding to reflect its broader strategic direction and commitment to sustainable energy development. Established on August 26, 2004, under the name PT Padang Karunia, the company has grown into one of Indonesia’s leading energy groups, with a diversified portfolio that spans across metallurgical coal mining, mineral processing, mining services, logistics, power generation, water treatment, and renewable energy initiatives.

PT Reska Multi Usaha, also known as KAI Services, is a subsidiary of PT Kereta Api Indonesia (Persero) established in 2003 with more than two decades of experience. The company was founded to implement and support the policies and programs of PT Kereta Api Indonesia (Persero) as the parent company, particularly in the railway restaurant business and other related services. PT Reska Multi Usaha operates in three core business areas: On Board Services, which include Sales On Train, On Train Cleaning, and Passenger Amenities; Integrated Facility Services, which consist of Security, Parking, Cleaning Service, and Outsourcing; and Commercial Services, which cover Restaurant, General Service, Cafe, and Catering.

PT Bank Negara Indonesia (Persero), Tbk (BNI) was originally established in Indonesia as a central Bank under the name of “Bank Negara Indonesia” on July 5, 1946. Subsequently, BNI became “Bank Negara Indonesia 1946”, with the status of a State-owned Commercial Bank. Additionally, BNI’s role as a Bank was mandated to improve the people’s economy and participate in national development.
BNI as a State Owned Enterprise was the first to became a public company after listing its shares on the Jakarta Stock Exchange and the Surabaya Stock Exchange in 1996. To strengthen its financial structure and competitiveness in the national banking industry, BNI conducted a number of corporate actions, including being recapitalized by the Government in 1999, Government share divestment in 2007, and a limited public offering in 2010.

PT Pertamina Training & Consulting (PTC) is a subsidiary of PT Pertamina (Persero), Indonesia’s state-owned oil and gas company. Established in 1999 under the name PT Patra Tridaya, the company officially began its operations in 2002. PTC was formed to support Pertamina’s strategic objectives in human resource development and operational excellence. Over the years, PTC has evolved into a multifaceted service provider offering a wide range of solutions in training, consulting, manpower supply, security services, event management, and competency assessment. Its role within the Pertamina Group is to ensure that the workforce and organizational systems are aligned with global standards and capable of supporting the dynamic needs of the energy sector.