At the Seafood Expo Global in Brussels from April 20-22, German manufacturer Ziegra showcased its industrial and commercial ice machines using CO₂ and hydrocarbons respectively, but questioned the 150-gram charge limit leaving a gap in their product range. Working with Skaginn, Icelandic manufacturer FROST, who traditionally use ammonia in their refrigeration systems for fish processing, are also looking into CO₂ as a viable industrial solution.