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Changhui Optics develops terahertz&nbsp;<a href=https:__www.ch-<a href= https:__www.ch-optics.com_ target= _blank>optics<_a>.com_ rel=noopener noreferrer target=_blank style=background-color: transparent; >optics<_a>&nbsp;(lens window off-axis parabolic l

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<span style=color: rgb(45 45 45); >The development of <a href=https:__www.ch-optics.com_ target=_blank >medical endoscopes<_a> worldwide has been around for hundreds years. With the popularization endoscopic minimally invasive techniques and improvement p

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