Green is important to global ecological Weleda. The company has produced natural and organic skin care products through biodynamic farming for over ninety years and, naturally, the bottles they use for their products are in green glass. The Stölzle glass factory at Köflach developed a special, sparkling green colour, one that met the Weleda requirements. STO reserved three production lines for the Weleda commission and over some three weeks, 9 million custom designed bottles in 50ml, 100ml and 200ml sizes were produced. These will be delivered to the customer in stages over 2013. The Köflach STO factory devotes one furnace to the production of coloured glass. For the major part of the year that glass is amber coloured. But for around ten weeks, production is turned over to green glass. This year the Weleda Green was moulded first, followed by some seven weeks of green containers for another client. Stölzle-Oberglas Köflach is the headquarters of the Stölzle Glass Group, leaders in both custom design and standard glass containers for Prestige and Beauty as well as Healthcare and Consumer.