Model NO.: 4.00-8 Cord Material: Butlyl Rubber Condition: New

Model NO.: V160 Sensitivity: Low, Normal, High, Ultra-High Earphone Hole: Yes

Model NO.: HWAL Cooling Meth

[ China Instrument Network Instrument Development ] On March 22, 2019, the preliminary acceptance meeting of the National Major Scientific Instruments and Equipment Development Project "Development and Application of Cross-Scale Micro-Nanometers" was held at the Shanghai Institute of Met