Basell Asia Pacific Ltd.Sequis Center, 8th Floor, Jl. Jend. Sudirman Kav. 71, Jakarta Selatan, DKI Jakarta 12190Business Line: PetrochemicalPhone: (021) 2524111Fax: (021) 2524112

Putranata Adi Mandiri, PTJl. RA. Kartini VIII No. 9 RT. 010/04, Kartini Sawah Besar, Jakarta Pusat, DKI Jakarta 10750Business Line: Control system and instrumentation for oil, gas and petrochemical industriesPhone: (021) 6007850Fax: (021) 6007846

Daekyung Indah Heavy Industry, PT [Factory] Krakatau Industrial Estate Cilegon Kav. K-1, Jl. Australia II, Cilegon, Banten 42443Business Line: Oil, gas and petrochemical plant equipment; Heavy equipmentPhone: (0254) 310307Fax: (0254) 393360, (0254) 393361

Humpuss Aromatik, PTGranadi Building, 10th Floor, Jl. HR. Rasuna Said Block X-1 Kav. 8-9, Kuningan, Jakarta Selatan, DKI Jakarta 12950Business Line: Petrochemical, aromaticPhone: (021) 52963460, (021) 52960486, (021) 52960248Fax: (021) 52963455

LG Chemical Ltd.Indonesia Stock Exchange Building, 15th Floor Suite 1502, Jl. Jend. Sudirman Kav. 52-53, Jakarta Selatan, DKI Jakarta 12190Business Line: PetrochemicalPhone: (021) 5151714, (021) 5151715Fax: (021) 5151716

Pitman Nusantara, PTBintaro Utama III-A Block B-25 Sector III-A, Tangerang, Banten 15225Business Line: Oil and gas petrochemical equipmentPhone: (021) 7375152, (021) 7375153Fax: (021) 7375150

Penelitian dan Laboratorium Bidang Pengolahan Direktorat Hilir PertaminaJl. Raya Bekasi Km. 20, Pulogadung, Jakarta Timur, DKI Jakarta 13920Business Line: Petrochemical researchPhone: (021) 4609315, (021) 4609311Fax: (021) 4609314

Sud-Chemie Indonesia, PTJl. Raya Narogong Km. 14 Pangkalan X, Cileungsi, Bogor, Jawa Barat 16820Business Line: Manufacturing of activated bleaching earth for the refining of edible and mineral oils, aluminium hydrosilicates for the petrochemical industry, foundry and civil engineering, and paper bentonite also floccutant for wastewater treatmentPhone: (021) 82497445, (021) 82498585, (021) 82496060Fax: (021) 82496060