Western anxiety over a potential breakthrough in Chinese chipmaking gear may be rising, but home-grown machines are not the greatest threat facing industry leader ASML, according to analysts.The Dutch firm’s shares fell more than 8 per cent at one point on Monday in the US before closing down 5.8 per cent, after The Information reported that China had begun manufacturing home-grown immersion deep-ultraviolet (DUV) lithography machines through a state-backed company in Shanghai.China would...