If you're looking for a reliable square bottom bag making machine, consider the YAST-FD450 model. It's capable of producing large bags with a face width of up to 450MM, making it perfect for supermarkets, hospitals, and other businesses that require spaci
FWDM wavelength division multiplexer is a WDM technology based on thin film filter (TFF), which is widely used in EDFA fiber amplifiers, WDM networks and fiber optic instruments.
CWDM cartridge module is a TFF(thin film filter) based wavelength division multiplexing technology, which has a variety of wavelengths and optional link structure. It multiplexes optical signals of different