NetQin Mobile Inc., which provides Internet services to protect mobile users from security threats in China, announced terms for its IPO on Friday. The Beijing-based company plans to raise $75 million by offering 7.1 million ADSs at a price range of $9.50 to $11.50. At the mid-point of the proposed range, NetQin Mobile Inc. will command a market value of $498 million. NetQin Mobile Inc., which was founded in 2005 and booked $18 million in sales last year, plans to list on the NYSE under the symbol NQ. Piper Jaffray is the lead underwriter on the deal, for which timing was not disclosed.