PSA Peugeot Citroen's sales in China and Southeast Asia continued to slump in May, dropping 50 percent year on year to below 24,800. The French automaker did not release country-by-country sales figures but China accounts for nearly all of PSA's Asian volume. Last month, roughly 16,600 Peugeot models and 8,200 Citroen cars including 500 DS models were delivered in China and Southeast Asia, according to figures PSA disclosed on its website. Through May, PSA’s deliveries