CHINA’S Lenovo Group plans to raise $2 billion through convertible bonds that it will issue after a four-year gap, becoming the latest major technology company to tap debt sales as calmer global markets reopen a window for large issuers.The computer maker said in a Hong Kong exchange filing on Thursday that the seven-year bonds will pay no regular interest and can later be swapped into Lenovo shares at HK$36.70 ($4.68) each, a 47.5-percent premium to the stock’s Wednesday close.A convertible bond is debt that investors can later exchange for shares.The deal comes after global markets steadied following a Middle East...