CASTECH Inc.

Chinese maker of optical crystals, precision optics, and laser components

What CASTECH does

CASTECH grows special crystals and makes precision optical parts such as lenses, mirrors, prisms and beam splitters that control and shape light. It also builds optical devices like optical switches and fiber-optic transmission parts. Companies use these parts in lasers, optical communications, AR, radar, semiconductor equipment and scientific instruments.

How CASTECH makes money

It sells crystal components, precision optical components and laser/optical devices to manufacturers in China and abroad. Its main customers build solid-state and fiber lasers, optical communication gear and precision equipment.

Products & services

• Nonlinear optical crystals
• Laser crystals
• Magneto-optical and acousto-optical crystals
• Precision optical components (lenses, prisms, waveplates, beam splitters)
• Magneto-optic, acousto-optic and electro-optic devices
• Optical lenses (scanning field lenses, beam expanders)