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we provide different size and capacity portable power bank for mobile phone, from 5000mAH-20000mAH. If you have any interest, pls. contact with me I will send you more detail information.

we provide different size and capacity portable power bank for mobile phone, from 5000mAH-20000mAH. If you have any interest, pls. contact with me I will send you more detail information.

small size, high capacity, slim size, wireless charge, build-in- cable , double USB or multi-USB

we provide different size and capacity portable power bank for mobile phone, from 5000mAH-20000mAH.

Current transformer.

Instrument transformer.

Name Moving Iron Ammeter-Voltmeter

Model Analog meter

Type LY-100Y

Accuracy: class 2.5/1.5
Specification: 30V 50V 75V 100V 120V 150V 200V 250V 450V 500V 600V, if over 600V, meters can be connected potential transformer with secondary voltage 100V

The 19 inches rack standard backup battery is based on Lithium iron phosphate battery, It has been designed to provide backup power for telecom equipment or energy storage system in household. It has excellent safety, high energy density, long lifetime, very nice temperature performance, green power newly of excellent safety and high reliability.
Custom capacity is acceptable.
High cycle life
4000 cycles @80% DoD for effectively lower total of ownership cost.
Longer service life
Low maintenance batteries with stable chemistry.
Built in circuit protection
Battery Management System (BMS) is incorporated against abuse.
Better storage
Up to 6 months thanks to its extremely low self discharge (LSD) rate and no risk of sulphation.
Quickly recharge
Save time and increase productivity with less down time thanks to superior charge/discharge efficiency.
Extreme heat tolerance
Suitable for use in a wider range of applications where ambient temperature is unusually high:
up to +60C.
Lightweight
Lithium batteries provide more Wh/Kg while also being up to 1/3 the weight of its SLA equivalent.
Function
Support parallel operation

The wall mounted Lithium battery (LiFePO4 Battery) solutions are highly integrated, deep cycle backup power solutions for your solar home energy storage system. With rich experience and advanced techniques, the product has the features of the fashionable design, high energy, high power density,
long service life, and easiness of installation and expansion.
Custom capacity is acceptable.
High cycle life
4000 cycles @80% DoD for effectively lower total of ownership cost.
Longer service life
Low maintenance batteries with stable chemistry.
Built in circuit protection
Battery Management System (BMS) is incorporated against abuse.
Better storage
Up to 6 months thanks to its extremely low self discharge (LSD) rate and no risk of sulphation.
Quickly recharge
Save time and increase productivity with less down time thanks to superior charge/discharge efficiency.
Extreme heat tolerance
Suitable for use in a wider range of applications where ambient temperature is unusually high:
up to +60C.
Lightweight
Lithium batteries provide more Wh/Kg while also being up to 1/3 the weight of its SLA equivalent.
Function
Support parallel operation

The wall mounted Lithium battery (LiFePO4 Battery) solutions are highly integrated, deep cycle backup power solutions for your solar home energy storage system. With rich experience and advanced techniques, the product has the features of the fashionable design, high energy, high power density,
long service life, and easiness of installation and expansion.
Custom capacity is acceptable.
High cycle life
4000 cycles @80% DoD for effectively lower total of ownership cost.
Longer service life
Low maintenance batteries with stable chemistry.
Built in circuit protection
Battery Management System (BMS) is incorporated against abuse.
Better storage
Up to 6 months thanks to its extremely low self discharge (LSD) rate and no risk of sulphation.
Quickly recharge
Save time and increase productivity with less down time thanks to superior charge/discharge efficiency.
Extreme heat tolerance
Suitable for use in a wider range of applications where ambient temperature is unusually high:
up to +60C.
Lightweight
Lithium batteries provide more Wh/Kg while also being up to 1/3 the weight of its SLA equivalent.
Function
Support parallel operation

Features :
3 times peak power, excellent loading capability.
Combine inverter/solar controller/battery all in one.
Multiple output : 2*AC output socket, 4*DC 12V, 2*
Working mode AC prior/ECO mode/Solar prior selectable
AC charging current 0 1 0A selectable.
LVD/HVD/Charging voltage adjutable, suitable for kinds of battery
Adding fault code to monitor real time work situations
Continuous stable p ure sine wave output with inbuilt AVR stabilizer .
Digital LCD and LED for visualization of operation status of the equipment.
Inbuilt automatic AC charger and AC mains switcher, stwitch time 4ms

The 19 inches rack standard backup battery is based on Lithium iron phosphate battery, It has been designed to provide backup power for telecom equipment or energy storage system in household. It has excellent safety, high energy density, long lifetime, very nice temperature performance, green power newly of excellent safety and high reliability.
Custom capacity is acceptable.
High cycle life
4000 cycles @80% DoD for effectively lower total of ownership cost.
Longer service life
Low maintenance batteries with stable chemistry.
Built in circuit protection
Battery Management System (BMS) is incorporated against abuse.
Better storage
Up to 6 months thanks to its extremely low self discharge (LSD) rate and no risk of sulphation.
Quickly recharge
Save time and increase productivity with less down time thanks to superior charge/discharge efficiency.
Extreme heat tolerance
Suitable for use in a wider range of applications where ambient temperature is unusually high:
up to +60C.
Lightweight
Lithium batteries provide more Wh/Kg while also being up to 1/3 the weight of its SLA equivalent.
Function
Support parallel operation

Input Voltage 12V / 24V DC optional
Output Voltage 115V / 230V AC optional
Portable power for AC products, AC outlets for connecting multiple loads
High surge capacity for products that require more power to start
High efficiency converts virtually all of the battery's power to AC
Mounting brackets for convenient installation
Heavy duty stud-connection mounting
RS232 communication port
WIFI/BMS Optional
Overload and over temperature shut down
Low voltage and over voltage alarm/cut off
Input reverse protection
Short circuit protection
PI15 series is a pure sine wave inverter, high frequency machine solution, the product is small size, the solution is reliable and stable, the main function is to invert the DC 12VDC battery or 24VDC battery to AC 230VAC or AC 115VAC output, mainly used for emergency use Electricity, car inverter,
outdoor electricity and other occasions.

Rated power : 5KW
Pure sine wave solar inverter
Output power factor 1
Built-in 80A MPPT solar charger
Built-in anti-dust kit for harsh environment
Support parallel operation up to 3 units (available for 3KW-5.5KW 48V)
WIFI remote monitoring (optional)
Compatible to generator

Introduction:

The environmental wind tunnel adopts an open DC wind tunnel and is equipped with an intelligent mobile rain test device. It can automatically adjust the size of raindrops and the amount of rainfall. It can simulate the size of rainfall and raindrops under any wind velocity conditions and can perform performance tests on windshield rain removal equipment.

Parameters:

1) Wind tunnel dimensions: 30.55m- 9.15m- 6m
2) Wind velocity range: 20 m/s to 80 m/s, wind deviation angle 0.5
3) Rainfall range: 0-800 mm/h, raindrop diameter 0.5-4.5 mm
4) Fogdrop diameter: 15-50 m, liquid water content: 0.03-3.0 g/m
(All parameters above can be customized to meet specific user requirements.)

GRES is an intelligent and modular power supply equipment integrating lithium battery and MPCS. According to different application scenarios, lithium battery, bidirectional DC / AC converter, bidirectional DC / DC converter, Static switch and Power management system can be arbitrarily combined to realize grid connected power supply, off grid power supply and off grid uninterrupted power supply power supply, static reactive power compensation, harmonic suppression and other functions. The system can have access to new energy, power grid, diesel generator and to rreasonable configuration, scientific utilization, to provide users with green, environmental protection, noise free, high reliability and high security power services.

Safe and reliable
High quality li-ion cell for mobile use
Laser welding connection with high strength and low impedance
Cells is designed with PC holders and reinforce steel structure to guarantee the highest safety of the system in transportation, installation and operation
Damping pad design to improve the impact resistance of the system
IP54 safe and reliable operation in outdoor environment
Serially designed PCS and battery pack eliminates circulating current and improve system reliability.
Integrated BMS,DC, AC multi-layer protection, maximum safety performance design
Efficient and Convenient
Integrated system, standard modular power module and battery module, easy for installation, maintenance and capacity expantion
Easy access to PV and diesel generator, intelligent muli-energy management.
Fixed on the ground or mounted on vehicle, can be loaded and unloaded by forklift and hoisted by lifting ring
Multi systems could be connected in parallel
Cost optimization
One investment, multiple benefits:Peak shaving, backup power supply, microgrid building,power quality improving and energy storage,etc.
Small size, light weight, less space and installation cost
Long cycle life, low failure rate, reduce operation and maintenance investment
Maximize green energy utilization.

Rated output power: 100KW
Rated energy: 150KWH

GRES is an intelligent and modular power supply equipment integrating lithium battery and MPCS. According to different application scenarios, lithium battery, bidirectional DC / AC converter, bidirectional DC / DC converter, Static switch and Power management system can be arbitrarily combined to realize grid connected power supply, off grid power supply and off grid uninterrupted power supply power supply, static reactive power compensation, harmonic suppression and other functions. The system can have access to new energy, power grid, diesel generator and to rreasonable configuration, scientific utilization, to provide users with green, environmental protection, noise free, high reliability and
high security power services.

Safe and reliable
High quality li-ion cell for mobile use
Laser welding connection with high strength and low impedance
Cells is designed with PC holders and reinforce steel structure to guarantee the highest safety of the system in transportation, installation and operation
Damping pad design to improve the impact resistance of the system
IP54 safe and reliable operation in outdoor environment
Serially designed PCS and battery pack eliminates circulating current and improve system reliability.
Integrated BMS,DC, AC multi-layer protection, maximum safety performance design

Efficient and Convenient
Integrated system, standard modular power module and battery module, easy for installation, maintenance and capacity expantion
Easy access to PV and diesel generator, intelligent muli-energy management.
Fixed on the ground or mounted on vehicle, can be loaded and unloaded by forklift and hoisted by lifting ring
Multi systems could be connected in parallel

Cost optimization
One investment, multiple benefits:Peak shaving, backup power supply, microgrid building,power quality improving and energy storage,etc.
Small size, light weight, less space and installation cost
Long cycle life, low failure rate, reduce operation and maintenance investment
Maximize green energy utilization.


Rated output power: 50KW
Rated energy: 75KWH

GRES is an intelligent and modular power supply equipment integrating lithium battery and MPCS. According to different application scenarios, lithium battery, bidirectional DC / AC converter, bidirectional DC / DC converter, Static switch and Power management system can be arbitrarily combined to realize grid connected power supply, off grid power supply and off grid uninterrupted power supply power supply, static reactive power compensation, harmonic suppression and other functions. The system can have access to new energy, power grid, diesel generator and to rreasonable configuration, scientific utilization, to provide users with green, environmental protection, noise free, high reliability and high security power services.

Safe and reliable
High quality li-ion cell for mobile use
Laser welding connection with high strength and low impedance
Cells is designed with PC holders and reinforce steel structure to guarantee the highest safety of the system in transportation, installation and operation
Damping pad design to improve the impact resistance of the system
IP54 safe and reliable operation in outdoor environment
Serially designed PCS and battery pack eliminates circulating current and improve system reliability.
Integrated BMS,DC, AC multi-layer protection, maximum safety performance design
Efficient and Convenient
Integrated system, standard modular power module and battery module, easy for installation, maintenance and capacity expantion
Easy access to PV and diesel generator, intelligent muli-energy management.
Fixed on the ground or mounted on vehicle, can be loaded and unloaded by forklift and hoisted by lifting ring
Multi systems could be connected in parallel
Cost optimization
One investment, multiple benefits:Peak shaving, backup power supply, microgrid building,power quality improving and energy storage,etc.
Small size, light weight, less space and installation cost
Long cycle life, low failure rate, reduce operation and maintenance investment
Maximize green energy utilization.

Rated output power: 150KW
Rated energy: 225KWH

According to:
Technique Regulation of Concrete Defect Detection with Ultrasonic CECS21: 2000
Depth measurement principle
When vibration energy transmits through the concrete and passes the crack, the vibrate energy will be diffracted at the point of the crack, whose diffraction angle has geometrical relationship with the crack depth. DJCS-05 crack depth measurement instrument adopts this geometrical between the diffraction angle and depth to realize high precision depth measurement.
Feature and Specification
Easily operation: Start measure when turn on, simply press to finish testing.
Result Intuition: No wave speed test and calculate to display the crack depth directly
Data processing: Data can transfer to PC, and then generate test report rapidly.
Depth scale: 10-350mm
Test precision: 5%
Data storage: 10600 depth data
Display: 4” Resolution 160*128
Power supply: 9VDC (6 AA battery)
Work environment: Temperature -5~40centigrade; Humidity 85%
Size: 220*180*80mm
Weight: 1000g