Joan Grau i Puig, son of the founder, takes over.

In 1918 he created the Grau i Iglesias Branch, dedicated to wool dyeing, offering a comprehensive dyeing and finishing service.

During this stage, the company triples the number of workers.

The 3rd and 4rd generation go through the hardest stages of the company: the Civil War and the floods of the Vallès in 1962, which caused the destruction of almost the entire company.

1968 marks the 100th anniversary of the company, already rebuilt and in full swing.

The 4th generation stands out for its diversification, with the opening of new headquarters and new fibers: polyester -HT- (70’s), linen and cotton (80’s) and polynosic, tencel and other cellulosic fibers (90’s).

With the entry of the 5th generation, innovation continues: synthetic fibers and the start of exports.

The company adapts to the new reality of European textiles: It is committed to quality, innovation, circular economy and service at a competitive price.

In the early 00’s, enters to new sectors: technical fabrics, a key pillar for Grau S.A. nowadays.

In 2018, the company celebrates its 150th anniversary.

In 2020, due to Covid19, Grau S.A. quickly adapts to contribute to the production of sanitary material (medical gowns and masks).