CIEL is the last brand owned by Ademir Carchano. Ademir Carchano previously used the brand ACVS for his products, but moved to CIEL due a change on his partnership.

List of products released by CIEL/ACVS:

• AC-88 (MSX1 to MSX2 Upgrade Board)
• ATA-IDE (Sunrise compatible)
• CF-IDE (Sunrise compatible)
• Expert 2+ Turbo (MSX2+ computer mainboard to replace Gradiente Expert Mainboard)
• Expert 3 Turbo (MSX2+ computer mainboard to replace Gradiente Expert Mainboard)
• Expert 4
• FAST FDD interface
• FM Cartridge (MSX-MUSIC Compatible)
• KitPlus (MSX1 to MSX2+ Upgrade Board for Gradiente Expert Plus and DDPlus)
• MegaRAM 128k (ACVS designed and released the first MegaRAM cartridge)
• MegaRAM 256k
• MegaRAM 512k
• MegaRAM 2MB
• Mini-Expansor de Slots (Mini Slot Expander)
• MSX1 to MSX2+ Upgrade Board