Established PT Krakatau Industrial Estate Cilegon (PT KIEC) based on Deed of Incorporation No. 17,16 June 1982 with capital 5.400 shares from PT Krakatau Steel Tbk.

Build 1 integrated switching station in the industrial area of Cilegon.

Transferring Management Rights of Wisma Krakatau from PT Krakatau Steel Tbk.

Build Conblock and Bricks Factory and Official Residence PT Krakatau Steel Tbk. in West Jakarta.

Build 46 Ha Union Area and 4 Ha Commercial Area on EPZ land.

Agreement of Transfering management of Wisma Baja Building Jakarta to PT KIEC and take over stadium to the parent company.

Takeover Guest House Management PT Krakatau Steel (Persero) Tbk. become accommodation for public facilities.

• Agreement for 25,8% Capital Stock Investment of PT Krakatau Medika's
• Decomposition of 99,98% for PT Krakatau Steel Tbk. company stakeholders and 0.02% for PT. Krakatau Engineering.

• Change the 14% capital stock placement on PT Krakatau Medika.
• Added PT KIEC capital stock ownership become 99.995% for PT Krakatau Steel (Persero) Tbk. and 0.005% for PT Krakatau Engineering.
• Launched 18 rooms of Hotel Blok Topaz.

• Operation Agreement with PT Purna Santana Wahana to build container base 50% each.

• Acquisitions of real estate developer company PT Laksana Maju Jaya with 99.9% ownership.

• Addition of PT Krakatau Medika's ownership percentage to 14.25%.
• Established 32 rooms in the Emerald Block hotel.

• Agreement to delegate the management of the WBBM building from PT Krakatau Steel (Persero) Tbk.
• Construction of a warehouse at the location of CM I.
• Cooperation in the development and marketing operation of “Bhumi Rakata Asri” between subsidiary companies, PT Laksana Maju Jaya and PT Nuscon Asri.

• Construction of Standar Factory Building in Kawasan Industri I.
• Established the Lobby Building and Meeting Room Opal.
• Hotel Permata Krakatau to become a Three Star Hotel.

• Hotel Permata Krakatau to become a Three Star Hotel.

• Sale of 5% investment in PT Krakatau Prima Dharma Sentana to DPKS so that the ownership of PT KIEC is 25%.
• Sale of 5% investment in PT Krakatau Prima Dharma Sentana to DPKS so that the ownership of PT KIEC is 25%.

Approval of investment placement of 9.37% shares in PT Krakatau Information Technology.

• Conversion of share ownership in PT Krakatau Information Technology (PT KITech) of 11.72%.
• Groundbreaking for the construction of the Permata Krakatau Five Floor Hotel by the President Director of PT Krakatau Steel (Persero) Tbk. Mr. Ir. Fazwar Bujang.
• Establishment of the Krakatau Sport Center building.

• The signing of Joint Venture Company with PT Krakatau Posco Chemtech Calcination.
• The signing of Joint Venture Company with PT Krakatau Posco Chemtech Calcination.
• Construction of two warehouses with a capacity of 2400 m2 in the CM 1 warehouse area.

• Sale of 59.4 ha largest land by Krakatau Nippon Steel Sumikin.
• Signing of Joint Venture Agreement between PT KIEC, Posco Chemtech Company Ltd, and Dong Suh Chemical Ind Co.Ltd. formed a subsidiary of PT Krakatau Posco Dongsu Chemical
• Establishment of PT Krakatau Posco Chemtech Calcinations factory.
• Establishment of PT Krakatau Posco Chemtech Calcinations factory.

• Establishment of a coal tar processing plant.
• Inauguration of the KCC current pool.
• Signing of JVC with Golden Lime Public Co. Ltd for the Lime Calcination Plant.
• Establishment of a coal tar processing plant.
• Inauguration of the KCC current pool.
• Signing of JVC with Golden Lime Public Co. Ltd for the Lime Calcination Plant.
• Establishment of a coal tar processing plant.
• Inauguration of the KCC current pool.

• Groundbreaking ceremony for commercial area and racer slide for KCC swimming pool.
• Groundbreaking of PT Krakatau Golden Lime.

• Rebranding Permata Krakatau Golf to The Royale Krakatau Golf & Country Club.
• Launching Cluster 5 of Rakata Realtindo Housing.
• Inauguration and Implementation of the Electronic Ticketing System (BRIZZI) at Krakatau Water World as well as rebranding from the Krakatau Country Club Swimming Pool to the Krakatau Water World Waterpark.
• Changes in Corporate Values from “Fokus PASTI2” to “IKHLAS”.

• Launching and implementing the Golf & Sport Center (OMEGA) Ground Breaking Operational System for the construction of the Kiddy Pool, the Family Water Slide, as well as the launching of Taman Lentera Berwarna at Krakatau Jungle Park.
• Takeover of 15% of PT Krakatau Engineering's shares in PT. Krakatoa Samator Indonesia.

• Received The Best Performance in the 2017 Krakatau Award and the 34th Corporate Level Quality Convention
• Won the PLATINUM category award in the 2017 TKMPN XXI & IQPC national quality convention.

• Groundbreaking of Gudang Antartika 1
• Groundbreaking Hotel Second Wing with the addition of 99 hotel rooms.

• Kick Off SAP s/4 Hana System Implementation
• Inauguration of 10,800m2 capacity Gudang Antartika.
• Designation of the Kawasan Industri Krakatau as Kawasan Industri OBVITNAS by the Minister of Industry of Indonesia.
• Launching of the New Cluster “Grand Rakata Residence”.
• Won 2 GOLD Medals at the XXIII TKPMN National Quality Convention.
• Received an Award at the 2019 CSR Citra Award.
• Inauguration of Protection House for Women Workers by the Minister of Women's Empowerment and Child Protection.
• Launching of the Second Wing of The Royale Krakatau Hotel by the President Director of PT Krakatau Steel Tbk.

In July, PT KIEC became a subholding and changed its name to PT Krakatau Sarana Infrastruktur (KSI). In September, PT Krakatau Sarana Properti (KSP) was officially established as a subsidiary of KSI.