The U.S.-China trade war being fought over technology has been surprisingly one-sided. But that’s changing. X For nearly four years, Beijing held back — even after the U.S. went for the jugular last fall with broad-based bans on sales of design software, semiconductor manufacturing equipment and advanced chips from companies like Nvidia (NVDA) and Advanced Micro Devices (AMD) to Chinese firms. Those measures amounted to a “policy of actively strangling large segments of the Chinese technology industry — strangling with an intent to kill,” wrote Center for Strategic and International Studies senior fellow Gregory Allen. China Appeared Penned In Yet Beijing appeared to be in no position to retaliate. It…