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.

PT Kereta Api Indonesia (Persero), commonly known as KAI, is Indonesia’s state-owned railway company responsible for operating and managing railway transportation across the country. With a rich history dating back to the colonial era, KAI has played a crucial role in Indonesia’s transportation infrastructure, connecting cities and regions through an extensive railway network.
The origins of railway transportation in Indonesia date back to the Dutch colonial period when the first railway line was constructed in 1864 by the Nederlandsch-Indische Spoorweg Maatschappij (NIS). This initial railway connected Semarang to Vorstenlanden (Surakarta and Yogyakarta). Over time, the colonial government established Staatsspoorwegen (SS), a state-owned railway company, to expand the railway network. By the early 20th century, Indonesia had a well-developed railway system spanning Java, Sumatra, and parts of Sulawesi. Following Indonesia’s independence in 1945, the railway system was nationalized, and the government established Djawatan Kereta Api Republik Indonesia (DKARI) to manage railway operations. Over the years, the organization underwent several transformations, becoming Perusahaan Negara Kereta Api (PNKA) in 1963, Perusahaan Jawatan Kereta Api (PJKA) in 1971, and Perusahaan Umum Kereta Api (Perumka) in 1991. In 1999, the company transitioned into PT Kereta Api (Persero), marking its shift toward a more corporate structure. Today, KAI operates as a modern railway company, continuously improving its services and infrastructure to meet the growing demands of transportation in Indonesia.

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.

BPJS Ketenagakerjaan, or Badan Penyelenggara Jaminan Sosial Ketenagakerjaan, is Indonesia’s official social security agency dedicated to protecting workers through a structured system of insurance programs. Established under Law No. 24 of 2011, it operates as a public legal entity and is part of the broader National Social Security System (SJSN), which aims to provide comprehensive protection for all Indonesian citizens. BPJS Ketenagakerjaan took over the role of PT Jamsostek in 2014, transitioning from a state-owned enterprise to a non-profit public institution with a mandate to serve both formal and informal workers.

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 Astra International Tbk was established in 1957 in Jakarta as a general trading company under the name Astra International Inc. In 1990, for the purpose of the Company's Initial Public Offering (IPO), the name of the Company changed to PT Astra International Tbk, followed by listing its shares on the Indonesia Stock Exchange under the ticker code ASII. Market capitalization of Astra as at the end of year 2019 was Rp280.3 trillion.
Pursuant to the articles of association, the Company may engage in the following business activities: general trading, industry, mining, transportation, agriculture, construction, services and consultancy. By 2019, Astra has expanded its business by implementing a business model based on synergies and diversification within seven business segments, consisting of: Automotive; Financial Services; Heavy Equipment, Mining, Construction, & Energy; Agribusiness; Infrastructure and Logistics; Information Technology; Property.

PT Saptaindra Sejati (SIS) is one of Indonesia’s leading mining contractors, specializing in coal mining services. As a subsidiary of PT Alamtri Resources Indonesia Tbk (formerly known as PT Adaro Energy Indonesia Tbk), SIS plays a crucial role in supporting Adaro’s mining operations by providing a broad range of services, including contract mining, civil works, infrastructure development, and land logistics. Over the years, SIS has developed a strong reputation for its expertise, efficiency, and commitment to safety in the mining industry.
SIS was established to meet the growing demand for reliable mining services in Indonesia. With its headquarters in Jakarta, the company operates across various mining sites throughout the country. SIS has continuously expanded its operations, investing in advanced technologies, modern equipment, and workforce training to ensure optimal efficiency in coal extraction. Through strategic planning and engineering solutions, SIS has contributed significantly to Indonesia’s coal industry, ensuring the smooth transportation and production of coal for domestic and international markets.

Bank Central Asia (BCA) is one of Indonesia's largest private banks, established in 1957. Over the years, BCA has grown significantly and now operates a vast network of branches and ATMs across the country. The bank is known for its wide range of financial services, including savings accounts, credit cards, loans, and investment products.
The bank has a strong reputation for its customer service and innovative banking solutions. BCA offers various digital banking services through its online platform, myBCA, which allows customers to manage their accounts, apply for loans, and perform other banking transactions conveniently from their homes.
In addition to its extensive branch network, BCA also provides specialized services for businesses and corporations, offering tailored solutions to meet their financial needs. The bank is committed to supporting local businesses and has various promotional offers and partnerships to help them grow.
BCA's headquarters is located in Jakarta, and the bank is regulated and supervised by the Financial Services Authority (OJK) and Bank Indonesia. The bank's mission is to provide reliable and efficient banking services to its customers while contributing to the economic development of Indonesia.