The German sparkling wine producer Sektkellerei Schloss Wachenheim AG has reported turnover for the first half of the year up 7% to €205m (US$180.9m). The company's profits in the period were up 26% on the same period last year to €4.8m, Sektkellerei Schloss said yesterday.   Its share of the domestic sparkling wine market increased to 24% from 20% in fiscal 2000/2001, while export sales expanded in the French and eastern European markets.