It's stated in the passage that ……………

Did you ever think of selling ice to Icelanders? An Israeli company certainly didn't until, of course, an Icelandic fishing company called asking to purchase three liquid ice-machines from the firm. The Icelanders need liquid ice, in which chemicals are carefully blended with ice so it flows, to chill freshly caught fish, thereby helping to preserve its flavour. Israeli engineers have for the past few years been developing new chilling technology for the company. While the concept of liquid ice dates to the 1930's, the company claims that their machines are less expensive and more efficient than previous models.