I have been using Multiple Industry New in TMR1207 for quite some time. I set up an industry which takes 2 products and produces a third product in the queue, e.g. consume flour and sugar and produce cake packaged as general goods. I worked out all the numbers regarding Size, Consumption requirements or Production capacity, wagon load capacity and waybill demands. For everything to work properly the numbers have to be correct. I have explained it in detail in a Word document for my future reference. Unfortunately, I don't know how to upload the document here!