Graf-Rob CJSC

Graf-Rob CJSC manufactures pemzablok — pumice concrete blocks — in Masis, in Armenia's Ararat region. It offers the blocks in three sizes: 10×20×40 cm, 15×20×40 cm, and 20×20×40 cm.

According to its own marketing materials, the company uses a vibropress machine that compacts the concrete under vibration, which it says produces blocks that are dense, crack-resistant, and flat-surfaced. The company states the blocks are made with M500-grade concrete, which its materials describe as "Persian" — a specific concrete type. It markets the blocks for use in both multi-unit apartment buildings and private houses.

Amalya Khachatryan is listed as director. The company can be reached by phone, email, or through its website.

Graf-Rob is based in Masis, in the Ararat region, ~14 km southwest of Yerevan (straight-line).