Chinese aerospace firm Lingkong Tianxing unveiled a hypersonic glide missile last week that has a range of up to 1,300 km (800 miles) and a top speed of Mach 7. The YKJ-1000 has been nicknamed the “cement-coated” missile for its use of civilian-grade materials such as foamed concrete in its heat-resistant coating. According to slides widely circulated online, the unit production cost of this missile, already in mass production after successful combat trials, may be as low as 700,000 yuan (around…
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