The Ruby Mills (TRML) was formally created and deployed as a legal entity in 1917 and is been engaged in the business of textiles.The company's manufacturing units are located at Khalapur (Raigad district) and in Bombay. Ruby Impex is the wholly owned subsidiary of the company.

The operational performance of the company in 1994-95 was adversely affected on account of the steep increase in the prices of polyester staple fibre (PSF) (which increased by 22%), viscose staple fibre (VSF) (by 41%) and cotton (by 60%). The production was adversely affected for 5 months due to the acute shortage of VSF. As a modernisation plan, the company purchased 30 Sulzer looms and replaced its 50 Cimmco autolooms and 36 wider Picanol looms.

In order to achieve deeper market penetration, TRML shifted from exclusively wholesale marketing to direct marketing by establishing a nationwide network of distributors and agents. During 1994-95, the government permitted the import of fabrics which adversely affected the demand for the company's products.

In order to retain the company's competitive advantage, a modernisation programme to improve productivity and quality,has been undertaken under the Textile Upgradation Fund Scheme.