Our cable trays and ladder systems are made from combining fiberglass and resins that are resistant to corrosion, fire, and electrical conductivity – making them ideal for use in a variety of industries including chemical plants, oil, gas and water treatment facilities, and. Our cable trays and ladder systems are made from combining fiberglass and resins that are resistant to corrosion, fire, and electrical conductivity – making them ideal for use in a variety of industries including chemical plants, oil, gas and water treatment facilities, and. EFG Composites known for the quality performance of its fiberglass products be it Ladders, Cable Trays, Etc. It is a company promoted by a group supplying industrial electrical and instrumentation products for last three decades, specially designed for the use in critical environment. Fiberglass. At IndiGrate Composites, we design and manufacture FRP Cable Trays that combine strength, durability, and corrosion resistance to deliver unmatched performance in the harshest environments. In this guide, we'll dive into everything you need to know about using composite cable trays in harsh conditions, including materials. *Check with our Call Centre for latest pricing and availability more. Both Polyester & Vinyl ester resin systems are available. Our systems are ideal for chemical plants, wastewater facilities, and coastal installations.