NEPG is a leading governmental integrated manufacturer of solar photovoltaic products from the production of ingots, wafers and cells to the assembly of PV modules. we are owning patented technology on silicon purification( from 2N to 8N), and also we have our own invested solar power plants with capacity of 50MW( 5 units running in China).
Meanwhile, we are also in the wind mill area and have our own wind nascle manufacturing plant.
Our products undergo rigorous internal tests and have obtained external certifications (ISO 9001, CE,IEC and TUV, etc) to ensure optimal performance and safety.
Totally, we have 30 subsidiaries in China, and Beijing Global Technotrade Group is one of them in charge of overseas market.
BGTG will be making efforts to boost the application of renewable energy technologies with its superior products and perfect service, thereby bringing a better future for the human beings.
Monocrystalline silicon wafer
Polycrystalline silicon wafer
BGTG solar wafer data sheet is as follows:
Conductive type P type
Square size wafer (mm) 156.75×156.75±0.2mm
Corner (mm) 1.4±0.5, 45°±10º
Resistivity ranges£¨Ω•cm£© 1-3
Doping elements Boron
Carbon content£¨atoms/cm3£© ≤5*1017
Minority-carrierLifetime£¨μs£© Average ≥5.5 (ingot)
Surface quality No crack, gap, missing Angle, perforated, window, microcrystalline
Warping degrees£¨μm£© ≤50
Neighbouring vertical degree 90±0.5°
Side damage£¨mm£© ≤0.5mm£¨length£©×0.3mm£¨width£©£¬(not more than 2 per wafer )
Line mark£¨μm£© ≤15
Light attenuation rate ≤2%
BGTG Solar Cells:
Polycrystiline silicon solar cell 3BB (Customized)
Polycrystiline silicon solar cell 4BB
Data sheet of 4BB poly solar cells is as follows for reference: