Pre-Coloured Yarns are based on hromopohores-molecular technology. Reliance Petroleum Ltd manufactures Pre-Coloured Yarns.
Reliance Petroleum Ltd is an ISO 9001-2000 and ISO 14000-2004 awarded company that also manufactures petroleum products, polyester products, polyester intermediates, plastics, polymer intermediates, chemicals and synthetic textiles and fabrics. Pre-Coloured Yarns are used in apparel, home textiles. It also finds application in institutional products requiring high washing, sublimation and rubbing colour fastness. The yarn comes under the brand name of Recron Swarang.