gmb lithium polymer battery · 2017-08-19 · why gmb li polymer battery ? gmb lithium polymer...

Why GMB Li Polymer Battery ?

GMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERYTechnology

Why Is Li Polymer Battery Is Exciting?

Enhanced Safety

Leakage-proof (No Free Electrolyte)

Ultra-thin in Thickness

Ultra-light in Weight

Design Flexibility (Quick Response to Customer Demands)

High Energy Density

Long Cycling LifeEnvironmental-Friendly (Pollution-free)


•Mobile Phones•PDA•Note-book Computers•Bluetooth Headsets•MP3•Digital Camera•Other Portable Electronic Devices•Power Tooling•Electrical Bicycles, Scooters and Others

GMB LIPO’s Applications


Typical Types of Li Polymer Batteries?

Bellcore Types (Bicell Concept)- Very Complicated Process and

Poor Production Yield

-Panasonic, Ultralife, ATL, Several Taiwanese Companies etc.

Winding Types– The Most Reliable Technology

-GMB, Sony, Sanyo

Other Types

Why

Win

ding


Bellcore Type of Li Polymer Battery

Bi-Cell Structure

Why

Win

ding



500-600mAh Polymer Cell Structure

Why

Win

ding



1) The Gel Separator is weak mechanically, specially, Low puncture resistance -- high S/C rate and cell swelling are expected.Low tensile strength -- difficult to use well-established winding technology.

2) Bi-Cell Concept -- the manufacturing process is too complicated and it will result in high manufacturing cost.

3) Very Low Production Yield - 50 - 60%.

Why

Win

ding


GMB Most Advanced Technology

In View of the problems of Bellcore type Li polymer battery, the Top players including GMB, Sony and Sanyo have developed and started mass production of Li Polymer Battery based on the state of the art winding concept.

Why

Win

ding



High Flexibility in DesignHigh Reliability

Excellent Performances High Production Yield

Competitive Price


BenchmarkingBenchmarking –– Excellent High Temperature Performance


Performance of GMB Li Polymer Battery

GMB LIPBAfter 10 days at 65oCand 95% RHOther’s LIPB

After 4 days at65oC and 95% RH



Other’s LIPBCycled at 65℃

GMB LIPBCycled at 65℃


Performance of GMB Li Polymer BatteryGMB601235P6H at 4.2V 85oC, 24hrs

Before Testing After Testing, No Swelling


Performance of GMB Li Polymer BatteryCompetitor’s (LS501235) at 4.2V 85oC, 24hrs

Before Testing After Testing, Swelling, (T4.70mm increased to 6.64mm, 41%


Performance of GMB Li Polymer BatteryGMB502030P6H at 4.2V 85oC, 24hrs

Before Testing After Testing, No Swelling


Performance of GMB Li Polymer BatteryCompetitor’s (LS502030) at 4.2V 85oC, 24hrs

Before Testing After Testing, Swelling, (T4.99mm increased to 9.31mm, 86%


5.085.024.964.924.84

4.7 4.995.52

6.256.64

2

4

6

8

10

0 5 10 15 20 25 30

Performance of GMB Li Polymer BatteryGMB vs Competitor’s (LS)

Storage at 4.2V 85oC x 24hrs

LS501235

GMB501235P6H

Storage Time (hrs)

Cel

l Thi

ckne

ss (m

m)


Performance of GMB Li Polymer BatteryGMB vs Competitor’s (LS)

Storage at 4.2V 85oC x 24hrs

4.994.964.924.894.85

4.99 5.236.19

8.65 9.31

0

3

6

9

12

15

0 5 10 15 20 25 30

LS502030

GMB502030P6H

Storage Time (hrs)

Cel

l Thi

ckne

ss (m

m)



GMB Has Made Break-through at Low Voltage (0V) Swelling Problem Since Early 2007


Performance of GMB Li Polymer BatteryGMB502030P6H, No Swelling at 0V, RT

Before Testing Shorted After 11 days, No Swelling


Performance of GMB Li Polymer BatteryGMB513446P6H, No Swelling at 0V, RT

Before Testing (4.86mm)

Shorted After 44 days, No Swelling (4.93mm)


Performance of GMB Li Polymer BatteryCompetitor’s (LS502030), Swelling at 0V, RT


Shorted After 1 day only,

Swelling to 5.74mm


Performance of GMB Li Polymer BatteryCompetitor’s (SO), Swelling at 0V, RT


Shorted After 6 day,

Swelling to 4.09mm


4.824.814.814.814.804.804.80

4.965.74

0

2

4

6

8

10

0 2 4 6 8 10 12

Performance of GMB Li Polymer BatteryLow (0V) Voltage Test at RT

LS502030

Cell-Shorted Time (Days)

Cel

l Thi

ckne

ss (m

m)

GMB502030P6H


4.934.86

4.09

3.49

0

2

4

6

8

0 10 20 30 40 50

Performance of GMB Li Polymer BatteryLow (0V) Voltage Test at RT

SO

Cell-Shorted Time (Days)

Cel

l Thi

ckne

ss (m

m)

GMB313446P6H


GMB LIPB Series Based Different Chemistry Systems

1) LiCoO2 Series—High Energy DensityGMB…P4-8H (2C),GMB…P4HR(5-7C), P4HHR(N))(10C),

P4H3R(N)(15C), P4H4R(15-20C), P4H5R(20C-25C)

2) LiNixCoyMnzO2 Based Series—Up to 3C/10V Overcharge

GMB…PMH(R)

3) LiFePO4 based Series—The Safest SystemGMB…PFH


GMB Polymer Roadmap/Line up

*Temperature:25 degC

*Discharge:0.2C,2.75V cut off

*Charge:4.2V-0.5C,3.5 Hours

GMB9867220

PFH

GMB8867220PMH

GMB853496

High drain cell

GMB503759

GMB502030

GMB383450

Polymer cell

2Q

1Q

4Q

3Q

2Q

1Q

4Q

3Q

2Q

1Q

4Q

3Q

2Q

1Q

4Q

3Q

2Q

1Q

4Q

3Q

2Q

1Q

4Q

3Q

2Q

CY2007CY2006CY2005CY2004CY2003CY2002CY2001

CELL

P4H 650mAh( 600 ) P5H 670mAh( 620 ) P6H 720mAh( 680 ) P8H 800mAh( 750 )

P4H 210mAh(190 ) P5H 250mAh( 230 )P6H 260mAh( 240 )

P8H 270mAh( 250 )

P5H 1150mAh( 1050 )P6H 1250mAh( 1200 ) P8H 1350mAh( 1300 )

P4HR /7C P4HHR/10C P4H3R/15CP4H4R/20C

P4H5R/25C

PMH

PFH

PMHRE


GMB LIPB Series Based Different Chemistry Systems

LiCoO2 Series—High Energy DensityGMB…P4-8H (2C),GMB…P4HR(5-7C), P4HHR(N))(10C),

P4H3R(N)(15C), P4H4R(15-20C), P4H5R(20C-25C)



High Capacity (GMB…P4…8H)


2.5

3.0

3.5

4.0

4.5

0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800

P4H

P5H

P6H

P8H

DISCHARGING PERFORMANCE (GMB383450P)

CAPACITY / mAh

VO

LT

AG

E /

V

Charge: CC, 0.5C to 4.2V; CV, 4.2V, 3.5hr cut-off

Discharge: 1C to 2.75VTemperature: RT

GMB polymer cell capacity improvement(P4H →P8H)11



CYCLING LIFE (GMB505085P5H)

0

500

1000

1500

2000

0 100 200 300 400 500

DIS

CH

AR

GE

CA

PAC

ITY

/mA

h

CYCLING NUMBER

Charge: CC, 1100mA to 4.2V; CV, 4.2V, 3.0 hr or 44mA cut-off

Discharge: 1100mA to 2.75VTemperature: RT

Long

Cyc

le L

ifeGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERY

Technology


CYCLING LIFE (GMB385085P4H)

0

200

400

600

800

1000

1200

1400

0 100 200 300 400 500 600

DIS

CH

AR

GE

CA

PAC

ITY

/mA

h

CYCLING NUMBER

Charge: CC, 1400mA to 4.2V; CV, 4.2V, 3.0 hr or 28mA cut-off

Discharge: 1400mA to 2.75VTemperature: RT

Long

Cyc

le L

ife



Excellent High Discharge Rate (GMB…P4H...R(N)


chargeable Battery

DISCHARGING PERFORMANCE(GMB853496P4HHR-10C) 2000mAh(min)

CAPACITY / mAh

VO

LT

AG

E /

V

CCCV: 1000mA to 4.2V4.2V,3.5 hr or 40mAcut-off at RT

GMB High Rate Polymer Cell

2.5

3.0

3.5

4.0

4.5

0 500 1000 1500 2000 2500

2000mA/1C

20000mA/10C

14000mA/7C

10000mA/5C30000mA/15C

26000mA/13C


Aner iable Battery

DISCHARGING PERFORMANCE(GMB853496P4H3R-15C) 2000mAh(min)

CAPACITY / mAh

VO

LT

AG

E /

V

CCCV: 1000mA to 4.2V4.2V,3.5 hr or 40mAcut-off at RT


2.5

3.0

3.5

4.0

4.5

0 500 1000 1500 2000 2500

2000mA/1C10000mA/5C

20000mA/10C

/30000mA/15C

40000mA/20C


2.5

3.0

3.5

4.0

4.5

0 400 800 1200 1600 2000 2400

2000mA/1C10000mA/5C

2000mA/10C30000mA/15C

40000mA/20C56000mA/28C50000mA/25C

DISCHARGING PERFORMANCE (GMB853496P4H4R-20C)2000mAh(min)

CAPACITY / mAh

VO

LT

AG

E /

V

CCCV: 1000mA to 4.2V4.2V,3.5 hr 40mAcut-off at RT



6.0

8.0

10.0

12.0

14.0

16.0

18.0

20.0

0 100 200 300 400 500 600 700 800

1C40C 10C15C20C

Performance of GMB Li Polymer BatteryDISCHARGING PERFORMANCE (GMB583460P4H4R-4S）

VO

LT

AG

E /

V

CAPACITY / mAh

Exce

llent

Hig

h R

ate


0

400

800

1200

1600

2000

0 20 40 60 80 100 120 140 160 180

GMB683496P4H4R 1450mAh(min)CYCLING LIFE

DIS

CH

AR

GE

CA

PAC

ITY

/mA

h

CYCLING NUMBER

Charge: CC, 1450mA(1C) to 4.2V; CV, 4.2V, 3.5hr or 40mA cut-off

Discharge: 20000mA(20A) to 2.75VTemperature:RT

181Cycle 76.41%164Cycle 80%


500.0

1000.0

1500.0

2000.0

2500.0

0 50 100 150 200 250

GMB703496P4H3RN188Cycle 71.19%

GMB753496P4H4R248Cycle 80.95%

GMB703496P4H3RN and GMB753496P4H4RCycling Life

DIS

CH

AR

GE

CA

PAC

ITY

/mA

h

CYCLING NUMBER

Charge: CC, 1700mA(1C) to 4.2V; CV, 4.2V, 3.5hr max or 34mA cut-off

Discharge: 17000mA(10C) to 2.75VTemperature: RT


0

500

1000

1500

2000

2500

3000

0 50 100 150 200 250 300

GMB853496P4H4R/290Cycle 80.37%

GMB853496P4H3RN/170Cycle 79.04%

GMB703496P4HHRN/145Cycle 75.30%

DIS

CH

AR

GE

CA

PAC

ITY

/mA

h

CYCLING NUMBER

GMBxx3496P4H..R(2000mAh)Cycling Life

Charge: CC, 1C to 4.2V; CV, 4.2V, 3.5hr or 40mA cut-off

Discharge: 20A to 2.75VTemperature: RT



GMB…PMH(R)Excellent Overcharging Capability

(Up to 3C/10V)


GMB…PMH cell advantage：

1、High reliability

2、Ultra-light in weight 3、ROHS compliance4、Excellent high temperature performance 5、long cycling life

Passed No Explosion, No fire

(up to 10Ah)Overcharge test(3C 10V)

Passed No Explosion, No fire Puncture test

Passed No Explosion, No fire 150℃ Thermal exposure Test

Passed

Passed

Conclusion

No Explosion, No fire Impact test

No Explosion, No fire Short-circuit test

Test resultTest item

GMB...PMH Polymer Cell Presentation


Discharge

Positive Electrode Reaction（Positive reaction）LiNiaCobMncO2

Charge

Discharge Li1-xNiaCobMncO2 + xLi+ + Xe-

Negative Electrode Reaction （Negative reaction）Cy + xLi+ + Xe-

ChargeCyLiX

Total Reaction（Total reaction）

LiNiaCobMncO2 + Cy

Charge

DischargeLi1-xNiaCobMncO2 + CyLix

LiNiaCobMncO2

GMB...PMH Charge and Discharge Reaction Theory


LiCoO2

Co molecular is replaced by Ni、Mnmolecular

Li(Ni-Mn-Co)O2

1. Safety performance good2. High temperature good3.The weight is light

LiCoO2 VS Li(Ni-Mn-Co)O2 StructureLiCoO2 VS Li(Ni-Mn-Co)O2 Structure


GMB7767220PMHE [9700mAh(min)] short-circuit test

Result：The cell is no explosion, no fire

The cell is fully charged before short-circuit test （4.20V)

The cell temperature increases to 87℃and the voltage is 2.11V during short-circuit test

Test method：To fully charge the cell at 0.5C and the cell is subjected to a short-circuit condition with a metal wire of resistance less than50mΩ,and the cell surface temperature is not over 150℃ ,the pass result is no explosion and no fire for the cell.

GMB...PMH safety test (Ref: UL 1642)short-circuit test


GMB7767220PMHE [9700mAh(min)]- Impact Test

Result：The cell is no explosion and no fire after heavy strike test

The cell is fully charged to4.2V

before heavy strike test

The cell picture after heavy strike test

Test method：to fully charge the cell and put it on the striking support ,then use 10kg’s hammer to strike the cell from 1m ,the pass result is no explosion and no fire for the cell.

.GMB...PMH Safety Test (Ref: UL 1642)


GMB7767220PMHE [9700mAh(min)- Thermal Exposure Test

Result：The cell is no explosion and no fire after thermal exposure test at 150 ℃

Test method：。After fully charged to 4.2V ,the cell is placed in an oven and the temperature increases to 150 ℃ with the rate 5±2℃ every minute ,then place the cell in an oven at 150℃ for 30min ,the pass result is no explosion and no fire for the cell.

GMB...PMH Polymer Test (Ref: UL 1642)


GMB7767220PMHE [9700mAh(min)] –Nail Penetration Test

Result：The cell is no explosion and no fire after puncture test.

Test method：。After fully charged the cell is penetrated through the cell with a nail (φ3.5mm) ,then the pass result is no explosion and no fire for the cell.

..GMB...PMH Safety Test (Ref: UL 1642)

Nail Penetration Tester


GMB7767220PMHE-9700mAh(min) （20A 10V）-Overcharge Test

Remarks：The cell without PCM and overcharge at 20A 10V ,the test result is no explosion and no fire.

Test method：Charge the cell with constant current 20000mA(20A) to 10V,then charge the cell with constant voltage for 7h, the pass result is no explosion and no fire for the cell,

.GMB...PMH Safety Test (Ref: UL 1642)


OVER CHARGING PERFORMANCE (GMB7767220PMHE)9700mAh(min)

3.0

5.0

7.0

9.0

11.0

0 1 2 3 4 5 6 7 8

0

4000

8000

12000

16000

20000

CHARGING TIME / HR

VO

LT

AG

E /

V

CU

RR

EN

T /

mA

voltagecurrent

CCCV: 20000mA(20A) to 10V10V,3.5 hr Without PCMcut-off at RT

GMB...PMH Safety Test (Ref: UL 1642)


Conclusion：According to the data above ,it shows GMB...PMH polymer battery weight is much lighter than other two . It is convenient to battery user :For example：The battery can use in electrical bicycle , GMB...PMH polymer battery is much light and can be installed and easily uninstalled in the bicycle

8.5kg10Ah36VNi-MH battery

12.9kg10Ah36VLead Acid Battery

2.7kg10Ah36VAGMB Polymer Battery

Weight kgCapacity AhVoltageBattery type

GMB...PMH –Ultra-Light in Weight3


High temperature performance data as follows：

Conclusion：The high temperature performance is Excellent

The cell is normal after 10 days.After fully charged to 4.2V,the cell is placed in an oven at 65℃

The cell is normal after 4 days.After fully charged to 4.2V, the cell is placed in an oven at 80℃

ResultTest method

GMB.PMH -High Temperature Performance3 3


0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

0 2000 4000 6000 8000 10000

-20℃ 25℃ 45℃ 65℃

DISCHARGING PERFORMANCE (GMB7767220PMHE-7S)9700mAh(min)

CAPACITY / mAh

VO

LT

AG

E /

V

Charge: CC, 2000mA(2A) to 29.4V; CV, 29.4V, 3.5hr or 194mA cut-off

Discharge: 8000mA(8A) to 19.25V

98.45%24.25128.3549904.6774.2765℃

100.8%

100%

62.62%

与25℃容量比值

24.14228.33410144.976.145℃

24.04928.29810060.375.4325℃

22.07427.1956299.4647.23-20℃

平台V压降V容量mAh放电时间min环境温度


0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

0 2000 4000 6000 8000 10000

-20℃ -10℃ 0℃ 25℃

DISCHARGING PERFORMANCE (GMB8867220PMHRE-7S)9700mAh(min)

CAPACITY / mAh

VO

LT

AG

E /

V

Charge: CC, 2000mA(2A) to 29.4V; CV, 29.4V, 3.5hr or 194mA cut-off at RT

Discharge: 8000mA(8A) to 19.25V

76.76%23.13527.6098268.0962-10℃68.79%22.30826.897409.7855.57-20℃

100%83.90%

与25℃容量比值

24.54228.67910771.880.7725℃23.78728.1069037.467.770℃

平台V压降V容量mAh放电时间min环境温度


0.0

1.0

2.0

3.0

4.0

5.0

0 2000 4000 6000 8000 10000

10A 20A 30A

DISCHARGING PERFORMANCE (GMB8867220PMHRE)9700mAh(min)

CAPACITY / mAh

VO

LT

AG

E /

V

CCCV: CC, 1940mA(0.2C) to 4.20V; CV, 4.20V, 3.5hr or 194mA cut-off at RT

3.3233.988943028.320A

3.4664.08810072.76.4710A

3.1643.8897866.4715.7330A

平台V压降V容量mAh放电时间min放电倍率


CYCLING LIFE (GMB7767220PMH-7S)9700mAh(min)

DIS

CH

AR

GE

CA

PAC

ITY

/mA

h

CYCLING NUMBER

0

2000

4000

6000

8000

10000

12000

14000

16000

0 50 100 150 200 250 300 350 400 450 500

Charge: CC, 5000mA(5A) to 29.4V; CV,29.4V, 7hr or 200mA cut-offDischarge: 10000mA(10A) to 19.3VTemperature: RT

Charge: CC, 3000mA(3A) to 29.4V; CV,29.4V,5hr or 200mA cut-offDischarge: 5000mA(5A) to 19.3VTemperature: RT

Charge: CC, 2000mA(2A) to 29.4V; CV,29.4V,3.5hr or 200mA cut-offDischarge: 8000mA(8A) to 19.3VTemperature: RT


CYCLING LIFE (GMB8867220PMHRE-7S)9700mAh(min)

0

2000

4000

6000

8000

10000

12000

0 10 20 30 40 50 60 70 80 90 100 110 120

1Set(101Cycle/96.62% EST: 597Cycle/80% (Tests in Progress )

2Set(109Cycle/96.51% EST: 624Cycle/80%)



2007-01-22

DIS

CH

AR

GE

C

APA

CIT

Y (m

Ah)

CYCLING NUMBERS

Charge: CC, 2000mA(2A) to 29.4V; CV, 29.4V, 7hr max or 194mA cut-off

Discharge: 8000mA(10A) to 19.25VTemperature: RT

PMH Polymer cell GMB8867220PMHRE(7S)-Life Cyling


0

3000

6000

9000

12000

0 20 40 60 80 100 120 140 160 180 200

197Cycle/94.33% EST: 842Cycle/80%

G

CYCLING LIFE (GMB8867220PMHRE-7S)9700mAh(min)

DIS

CH

AR

GE

CA

PAC

ITY

(mA

h)

CYCLING NUMBERS

Charge: CC, 2000mA(2A) to 29.4V; CV, 29.4V, 7hr max or 194mA cut-off


PMH Polymer cell GMB8867220PMHRE(7S)-Life Cyling


0

2000

4000

6000

8000

10000

12000

0 40 80 120 160 200 240 280 320 360

GMB Li Pomer Rechargeable Battery

CYCLING LIFE (GMB8867220PMHRE-Cell)9700mAh(min)

DIS

CH

AR

GE

CA

PAC

ITY

/mA

h

CYCLING NUMBER

Charge: CC, 2000mA(2A) to 4.2V; CV, 4.2V, 3.5hr or 200mA cut-off


PMH Polymer Cell GMB8867220PMHRE（Cell）-Cycling

350Cycle 94.99%

EST:1397Cycle 80%


Equipped with Advanced Facilities

GUANGHZOU MARKYN BATTERY CO., LTD.


GMB Advanced Manufacturing Facilities

We are equipped with advanced manufacturing facilities to guarantee our Our LIPB with high qualities, such as:•Double-sided Intermittent Coaters•Dry-boxes -- Our cells are manufactured under most-controlled environments.

•Advanced Battery Testers and Much More•Semi-auto Sealing Machine•Manual Winding– Flexible for Production•Auto Winding--Implemented


GMB Advanced Manufacturing Facilities

Increased Automation

• Double-sided Intermiternt Coaters • Continuous Electrode Pressing• Continuous Electrode Slitting• Auto Packaging Forming• Semi-Auto Winder• Fully-Auto Winder


GMB Advanced Manufacturing FacilitiesAlu Cup Forming Machine

• This is the auto alu cup forming machine which do not require operator to cut the alu foil to size. (In roll form)

Auto Winding Machine

• This is the auto winding machine which can produces 4 pieces per minute


Coating Machine

• This coating machine can coat 2 sides with intermediate mass free zone.

Vacuum Mixer • This machine mixed the slurry in a vacuumed container to reduce air bubbles create during the mixing process.

Slitt

ing

mac

hine

• This slitting machine can continuous slit electrode to the require width.

• This compacting machine can compact the electrode continuously.


Auto Weighing machine

• This machine is design by GPBI to replace the existing manual weighing.

• It can sort the electrodes into 5 categories with all data collected.

13.70

61.64

20.55

3.42 0.68Grade1 Grade2 Grade3 Over

WeightUnder

Weight

• All data collected from the auto weighing machine will be stored in excel format which can be use to plot x-bar, histogram and pareto chart.


GUANGZHOU MARKYN BATTERY CO., LTD

Sealing Machine

• This in-house built machine looks more presentable with surrounded metal casing and a control panel on top.

Riveting & Pressing Machine

• This machine combines riveting and pressing process which increase the efficiency.


We are conducting very strict quality control at every steps of R&D and production processes.

Most of raw materials are imported from internationally reputed suppliers (USA, Japan, Europe).

100% Checking on capacity, voltage, Internal Impedance etc.Each cell has its own ID number (100% traceable)Fully Recorded on R&D and Production.

Quality Control

GUANGZHOU MARKYN BATTERY CO., LTDGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERYTechnology

Product Performance Verification

Incoming materials

Cell assembly

Activation & Aging

OCV/Ri check,& Pack assembly

Finished goods

IQC

Process QC

Capacity Verification

Outgoing QC

QA - Safety andReliability Test at Cell & Pack

GUANGZHOU MARKYN BATTERY CO., LTDGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERYTechnology

GM Battery RoHS Control

Design ControlDesign Control

Incoming InspectionIncoming

InspectionProcess Control

Process Control

Outgoing Inspection

Outgoing Inspection

GUANGZHOU MARKYN BATTERY CO.,LTDGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERY

Technology

•X-ray Analyser (RoHS)•AAS (Elemental Analysis)•Moisture Analyser•Laser Particle Size Analyser•PH meter•Chemical Analysis Apparatus

Chemical Laboratory Facilities

GUANGZHOU MARKYN BATTERY CO., LTDGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERY

Technology

Thank you for watching！

GMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERYGMB LITHIUM POLYMER BATTERYWork Flow

gmb lithium polymer battery · 2017-08-19 · why gmb li polymer battery ? gmb lithium polymer...

Documents