B
Bolton Photonics develops photonics hardware and optical components for industrial and technology applications.
$140KSeries B+
Investor undisclosed
A $0.1M Series B+ in photonics from China is a modest follow-on that suggests either a tight capital environment for hardware or Bolton is bootstrapping aggressively between larger rounds—not a signal of category heat. If you're building industrial hardware with long sales cycles, this is a reminder that Chinese photonics companies are willing to operate lean; watch if they're competing on cost or performance in your supply chain.