With DirectIndustry you can: Find the product, subcontractor or service provider you need | Find a nearby distributor or reseller| Contact the manufacturer to get a quote or a price | Examine product characteristics and technical specifications for major brands | View PDF. With DirectIndustry you can: Find the product, subcontractor or service provider you need | Find a nearby distributor or reseller| Contact the manufacturer to get a quote or a price | Examine product characteristics and technical specifications for major brands | View PDF. With DirectIndustry you can: Find the product, subcontractor or service provider you need | Find a nearby distributor or reseller| Contact the manufacturer to get a quote or a price | Examine product characteristics and technical specifications for major brands | View PDF catalogues and other. kilometers, ZTT is the specialist in outdoor optic fiber cables, offering superior products and services to meet every customer's needs in the realm of optical communication systems. Temperature: -20 °C - 70 °C. Multitube optical fibre cables, TKEST sheath Loose tube. ETK Kablo 's fire-resistant fiber optic cables ensure continuous data transmission during fire conditions, safeguarding critical communication lines when reliability is most crucial. In this guide, we list the Top 5 Global Manufacturers who set the standard for fire safety. We will also clarify the confusing jargon (OFNR vs. CommScope designs and manufactures a comprehensive line of fiber optic cables—from outside plant to indoor/outdoor and fire-rated indoor fiber cables.