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GB - Chinese national standards
Page 5422
GB 7957-2023 (08/09/2023)
Safety technical requirement for cap lamps in coal mine
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 379.00 EUR more info
GB 7958-2014 (22/12/2014)
Capacitor discharge type exploders for coal mines
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 357.20 EUR more info
GB 7959-2012 (20/11/2012)
Hygienic requirements for harmless disposal of night soil
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 932.70 EUR more info
GB/T 7962.1-2010 (14/01/2011)
Test methods of colourless optical glass - Part 1: Refractive index and coefficient of dispersion
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 183.50 EUR more info
GB/T 7962.10-2010 (14/01/2011)
Test methods of colourless optical glass - Part 10X-rays stability
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 150.90 EUR more info
GB/T 7962.11-2010 (14/01/2011)
Test method for colourless optical glass - Part 11: Precise test method for refractive index in the visible wave band
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 226.90 EUR more info
GB/T 7962.12-2010 (14/01/2011)
Test methods of colourless optical glass - Part 12: Spectral internal transmittance
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 150.90 EUR more info
GB/T 7962.13-2025 (30/06/2025)
Test methods of colourless optical glass—Part 13Thermal conductivity
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 298.60 EUR more info
GB/T 7962.14-2010 (14/01/2011)
Test methods of colourless optical glass - Part 14: Resistance to acid
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 150.90 EUR more info
GB/T 7962.15-2010 (14/01/2011)
Test methods of colourless optical glass - Part 15: Resistance to humidity
Available languages: English, Chinese
Available design: electronic design (pdf), Print design
from 183.50 EUR more info
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