Collano adhesives are a key element of these safety doors being installed in what will once be the world抯 longest railway tunnel (57 kilometers). Collanos custom-formulated RS 8507 adhesive features high strength combi......Collano adhesives are a key element of these safety doors being installed in what will once be the world抯 longest railway tunnel (57 kilometers). Collanos custom-formulated RS 8507 adhesive features high strength combined with elasticity, so it precisely matches the criteria for assembling the frames of the safety doors. Jurg Ryser, who is in charge of fabrication at Elkuch Bator, enjoys working with Collano: "The excellent service and hands-on development support we received from Collano contributed significantly to the success of the project."