PT Reska Multi Usaha, also known as KAI Services, is a subsidiary of PT Kereta Api Indonesia (Persero) established in 2003. The company's primary goal is to support and implement the policies and programs of PT Kereta Api Indonesia, especially in the railway restaurant business and other related services.
The company operates in three core business areas: On Board Services, Integrated Facility Management, and Commercial Services. On Board Services include sales on trains, train cleaning, and passenger amenities. Integrated Facility Management encompasses security, parking, cleaning services, and outsourcing. Commercial Services include restaurants, general services, cafes, and catering.
The origins of PT Reska Multi Usaha date back to the Dutch colonial era when the government provided railway restaurants to cater to passengers' needs during their journeys. In 1971, during the early days of PT Kereta Api Indonesia, a dedicated unit called RESTORKA was established to manage railway restaurants. Initially, RESTORKA offered simple beverages like "Es Siripit," but it expanded its menu over time, including the famous "Nasi Goreng Parahyangan" when the KA Parahyangan train was launched.

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.

Husky-CNOOC Madura Limited (HCML) is a key player in Indonesia’s upstream oil and gas industry. Operating under a Production Sharing Contract (PSC) with the Indonesian government, HCML is a joint venture between Husky Oil Madura Partnership (40%), China National Offshore Oil Corporation Southeast Asia Limited (40%), and SMS Development Ltd. (20%). The company’s mission is to responsibly explore and produce hydrocarbons in the Madura Strait, contributing to national energy security and regional development.
HCML’s origins date back to 1982, with the formation of Husky Oil Madura Limited. In 2011, following a strategic partnership with CNOOC, the company was restructured and rebranded as HCML. Since then, it has focused on developing offshore gas fields, with the BD Field being its flagship project. Located approximately 65 kilometers east of Surabaya and 16 kilometers south of Madura Island, the BD Field contains significant reserves of natural gas and condensate. Its development has been instrumental in supplying clean energy to East Java and beyond.

The RDMP Balikpapan JO (Refinery Development Master Plan - Joint Operation) is a major national energy infrastructure initiative being developed by PT Kilang Pertamina Balikpapan, a subsidiary of Indonesia’s state-owned oil and gas company PT Pertamina (Persero). Its primary goal is to modernize and expand the Balikpapan refinery located in East Kalimantan, boosting its capacity from 260,000 barrels per day to 360,000 barrels per day. This upgrade is not merely a numerical enhancement but a strategic move to improve the refinery’s ability to produce cleaner, higher-quality fuels in line with international environmental standards.
The project is being executed through a joint operation involving key players such as Hyundai Engineering, Rekayasa Industri, SK Engineering and Construction, and PT PP. These firms bring together a blend of global expertise and local resources to address the engineering complexities of integrating cutting-edge technology into an existing facility. Among the technological upgrades is the inclusion of equipment capable of producing fuels compliant with EURO V standards, which means lower sulfur content and reduced emissions. New units such as the Crude Distillation Unit (CDU-IV), Hydro Cracking Units, and the Heavy Vacuum Unit have been installed or revamped to ensure efficiency and compliance with global benchmarks.

PT Vale Indonesia was established by Deed No. 49 dated July 25, 1968, drawn up before Eliza Pondaag, a public notary in Jakarta. We operates under a Contract of Work, which was amended with a Special Mining Business Permit (IUPK) on May 13, 2024. The contract is valid until December 28, 2035, and the concession covers an area of 118,017 Ha covering South Sulawesi (70,566 hectares), Central Sulawesi (22,699 hectares) and Southeast Sulawesi (24,752 hectares).
In producing nickel in the Sorowako Block, we use pyro metallurgical technology (in melting the laterite nickel ore). The Company mines laterite nickel ore and processes it into the final product of nickel in matte.
The Company also continues its plan to developing integrated mining practices through the Indonesia Growth Project (IGP) in Morowali Regency, Central Sulawesi, and in Kolaka Regency, Southeast Sulawesi. The development project also targets existing operational locations, in East Luwu Regency, South Sulawesi.
As the two largest shareholders, MIND ID (PT Mineral Industri Indonesia) and Vale Canada Limited (VCL) jointly control PT Vale Indonesia Tbk. MIND ID holds the largest share in the company at 34.00%, while VCL holds approximately 33.88%.

PT Trakindo Utama is a prominent company in Indonesia, known for its extensive range of heavy machinery and equipment. Founded on December 23, 1970, by the late AHK Hamami, PT Trakindo Utama has grown to become the sole authorized dealer of Caterpillar Inc. in Indonesia. This milestone marked PT Trakindo Utama as the first locally owned heavy machinery company in the country.
Over the years, PT Trakindo Utama has been instrumental in Indonesia's development and growth. The company is supported by state-of-the-art facilities, advanced technology, and a network of branches spread across the nation. PT Trakindo Utama offers a wide range of products, including Caterpillar equipment, engines, forklifts, and spare parts. Their product lineup includes large dozers, medium wheel loaders, motor graders, mini excavators, and off-highway trucks, among others.

Eni is a major integrated international oil and gas company based in Milan with Exploration and Production activities in Italy and other areas worldwide such as Africa, America, Asia Pacific, Eurasia, and the Middle East.
Eni Indonesia is a subsidiary of the Italian multinational oil and gas company, Eni S.p.A. Eni Indonesia has been operating in Indonesia since 2001, focusing on the exploration, production, and development of hydrocarbons both onshore and offshore. The company plays a significant role in Indonesia's energy sector, contributing to the country's energy security and economic growth.

PT Pelita Air Service (PAS), established in 1970 in Indonesia, began its journey in the exploration and exploitation of oil and natural gas fields. Over the years, PAS has evolved into a leading provider of aviation and industrial services, offering award-winning solutions that cater to diverse needs. As part of its commitment to excellence, the company has built a reputation for reliability and innovation in transportation, training, maintenance, and other specialized services.
In aviation, PAS has demonstrated exceptional capabilities, logging 37,884 flight hours between 2014–2017. Its extensive network includes five base stations, with a fleet comprising 15 rotary-wing aircraft (helicopters) and nine fixed-wing planes. Notably, PAS plays a crucial role in Papua’s "1 Fuel Price" program, transporting over 150 kiloliters of fuel monthly to support equitable fuel access in remote areas.