Hangzhou Mdk Opto Electronics Co.,Ltd. engages in the research, manufacture, and sales of optoelectronics, semiconductor optics, semiconductor micro-nano circuit, and intelligent terminal products in China. The company offers optical sensor package substrates and carrier glass substrates, as well as ceramic substrate precision machining services; and biometric products, such as optical connectors for 3D structured light modules, biometric infrared bandpass optical filters, semiconductor wafer optical solutions, and optical filters for fingerprint recognition modules. It also provides image products, including smart phone and security camera filter assembly, infrared cutoff and optical low pass filters, ultra-low reflection optical lens, optical wavelength plates, and sapphire products; vehicle-mounted parts, such as pattern coating on glass wafer and absorption coated filters; and machine vision products, including colored glass optical coating film; as well as high-refractive index glass wafer precision engineering service for AR/MR parts.