许多年来,世界各国的工业品艺术设计师们努力不懈地寻找合乎理想条件的椅子设计方案,要求这种椅子不允许有或者至少能减少脊惟病的发病率。 1979年挪威工业品艺术设计师小组拟定了新颖的椅子设计构思,称作勃朗斯(Balans)构思。这项构思建立在全新的座椅原理上, For many years, designers of industrial arts in various countries in the world have been tirelessly searching for a chair design that meets the ideal conditions. They require that such chairs do not allow or at least reduce the incidence of spinal disease. In 1979, the Norwegian team of industrial art designers developed a novel chair design concept called the Balan concept. This concept is based on the new seat principle.