For Schreiner Group based in Oberschleissheim near Munich, 2021 marks a very special year. Founded in 1951, the high-tech company is celebrating its 70th anniversary. The past seven decades have seen the family-owned firm evolve from a garage business into the hidden champion with international operations that it is today. Now, 1,200 people are employed at four locations worldwide, most of them at the company’s headquarters in the north of Munich.