My company mainly engaged in the East China Electronics, Beijing Nuclear Instrument Factory, Beijing Hamamatsu, Hamamatsu, Japan various photomultiplier tubes. 
 Model is complete, example: Hamamatsu, Japan: R928, R2228, the R580, R268, R166, R1527P, R212, R878, R374, R446, R456, R7154, R105, 1P21, 1P28, 931A, P31B 
 Beijing Hamamatsu: CR131, R184, R192, R105, R110 
 Huadong Bin Song: GDB221, DB235, DB423, GDB159, GDB152, GDB142, GDB424 
 Nuclear Instrument Factory: GDB19 GDB20, GDB21 GDB23, GDB28 GDB30, GDB37, GDB38, GDB44, GDB51, GDB52, GDB53, GDB55 

 Installed new goods, the price is lower than the factory price! Can pre-apply! 
 Quality assurance, low prices, and plenty of cash.