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PT Semen Indonesia (Persero) Tbk
It makes and sells cement and other building materials to construction markets in Indonesia, Vietnam, and beyond.
Semen Indonesia is the giant cement maker of Indonesia. If you live in Java and watch a building go up, there is a good chance the grey powder holding the concrete together came from this company. It sells cement and other building materials to construction sites, hardware stores, and big infrastructure projects across Indonesia, Vietnam, and a handful of export markets.
Cement is a brutally simple business. You dig limestone and clay out of the ground, crush them, cook them in a kiln at enormous heat, and grind the result into powder. That powder is the glue in concrete. The tricky part is that cement is heavy and cheap, so shipping it far eats your profit. That is why cement makers fight to own plants near the customers they serve and why the business is a game of scale, logistics, and keeping those kilns running hot around the clock. The company is the product of a big consolidation. Its parent, a state-owned holding company, combined the old Semen Gresik with Semen Padang, Semen Tonasa, and later the local operations of LafargeHolcim and a large stake in a Vietnamese cement producer. The result is a national champion with plants spread across the archipelago. The deeper story is Indonesia's building boom: presidents love new toll roads, dams, ports, and housing programs, and every one of those projects needs cement. The company earns money mostly by selling bags and bulk cement, plus related materials like ready-mix concrete, and it also exports clinker and cement when the home market is quiet.
That home market is the problem. Indonesia has far more cement-making capacity than it currently uses, and when too many factories chase too few orders, prices get ugly. Its biggest listed rival is Indocement Tunggal Prakarsa, and the two of them, along with a crowd of smaller players, keep squeezing each other on price. The company is also watched closely by investors because a large chunk of its shares trades freely, while the government keeps control through its holding company. The simple version: this is a big, essential, somewhat boring business whose fortunes rise and fall with how much Indonesia decides to build.
Saved answer · last researched 12 Nov 2026