Leo Koolen of Koolen Mushrooms
We are very pleased with Indigo Engineering. During the pre Project phase Bonne Heeringa invested lot of time and effort in making the questions translate into an installation that just fullfilled our wishes. We first started with small-scale tests. Then for a few months a pilot plant was installed. Bonne followed properly these tests. He visited our production many times because he wants to see how the process goes and he has real interest. He has a lot of patience and had given us time. After that we came to an investment and also that process went well. The installation is placed, everything is nicely finished and handled. In case there is a question, one call is enough and the problem is solved within a very short time. Indigo Engineering executed this project extremely well. Bonne is truly and sincerely. I have great respect for that.