we are factory speical make the instrument for 15 years, and we have CE ISO9001 and CE certification 1.pressure instrument: general gauge, stainsteel steel gauge, oil gauge, Differential Pressure Gauge. SF6 use ***** gauge.diaphragm gressure *****-manometer, Ammonia Gauge, Bayonet Case Low Gauge Gas regulator, calibrator, Transmitter etc ***** instrument: Glass thermometer, Bi-metal Thermometer, Digital Thermometer and Capillary thermometer, Thermo-hygrometer, Controller, Infrared Thermometer, Transmitter, Thermostats Calibrators etc 3.Level Gauge, Float Gauge, Flow Calculation, Flow Meter, Transmitter 4.Digital Multimeter Capacitance Meter, Clamp Meter, Oscilloscope , Tester ( Battery, Voltage Resistance, Cable) Analog Multimeter .Bench-Type.Automotive use Multimeter ***** instrum: Anemometer, Sound Level, Lux Meter, Metal Detector, Tachometer Stroboscope, Moisture Meter, Hardness, Thickness Meter, Roughness meter, Humidity Meter, Gas Detector, Gas Analyzer etc 6.Surveying Instrum: Distance Meter, Velocimeter, Laser Line ***** industru Instrument:Mud Test Equiremnt, Weight Indicators, mud Pressure Gauge etc ***** Instrum Thermometer&HygrometerHalogen Leak DetectorTemperature Panel