SPI Joint Stock Company, formerly Spilit Rock Joint Stock Company, is a Vietnam-based company engaged in the mining, quarrying and processing of mineral resources. Its principal products include rock stones, which are from 0.8 to 4 cubic meters and extracted directly from the Company's mine by drilling or dynamite explosion; Gambro green sliced stones, which are rock stones being sliced by machines into measures of 60 x 60, 30 x 30, 20 x 40 and 10 x 10 to be used in construction projects of apartment buildings, staircases and entrance roads of resorts; as well as sliced angle-sharpened stones for wall tiling and decoration purposes. In addition, the Company trades Talc powder, quartz powder and CaCO3 powder, among others, which are used in the paint, paper, rubber and plastics industries.