PT Profesional Telekomunikasi Indonesia ("Protelindo") was established in 2003 and is the leading independent owner and operator of towers for wireless communications companies in Indonesia.Since 2008, Protelindo's shares of 99.99% have been owned by PT Sarana Menara Nusantara Tbk ("SMN"). (* Status 3Q21)As of March 2023, Protelindo owned and operated approximately 29,757 telecommunication tower sites with more than 53,820 tenants in Indonesia, primarily in Sumatra, Java, Bali, Kalimantan, and Sulawesi.All business activities and SMN business operations are carried out through Protelindo. On March 8, 2010, SMN completed its initial public offering of shares and is now listed on the Indonesia Stock Exchange (IDX) with the stock code "TOWR". Protelindo's primary business is leasing space on its multi-tenant tower sites to major wireless operators in Indonesia pursuant to long-term lease agreements. This leased space consists of vertical space on the tower, on which our customers can install radio frequency antennas and microwave antennas, as well as ground space at each site for our customers' shelters and cabinets that house electronic equipment and power supplies. Our tower portfolio is the largest in Indonesia among independent tower operators and boasts the broadest geographic footprint.Our geographically diversified tower portfolio offers coverage across the entire Indonesian archipelago, thereby strengthening our position as the preferred tower provider able to address the needs of national, regional, local, and emerging wireless communication company operators.Protelindo operates independently from the wireless communication operators and has a diversified customer base. Our key customers include the major telecommunications operators in Indonesia.