X-Technology, the Swiss marketer of the X-Socks and X-Bionic brands, is about to diversify its manufacturing facilities. So far, the X-products have been produced by the Italian Trerè s.r.l. Hosiery Innovation based in Asola on an exclusive basis. Due to huge increases in sales, varying from 100 to 140 percent annually, the company needs additional production facilities on top of Trerè's. X-Technology, which is now represented in more than 30 countries, does not release absolute sales figures.