SPC GB/T 1550-2018

Published Date: 11/01/2019

Test methods for conductivity type of extrinsic semiconducting materials (TEXT OF DOCUMENT IS IN CHINESE)

$54

SPC GB/T 15851.3-2018

Published Date: 07/01/2019

Information technology -- Security techniques -- Digital signature schemes giving message recovery -- Part 3:Discrete logarithm based mechanisms (TEXT OF DOCUMENT IS IN CHINESE)

$144

SPC GB/T 20975.31-2019

Published Date: 05/01/2020

Methods for chemical analysis of aluminium and aluminium alloys -- Part 31: Determination of phosphorus content -- Molybdenum blue spectrophotometry (TEXT OF DOCUMENT IS IN CHINESE)

$42

SPC GB/T 37155.2-2019

Published Date: 12/01/2019

Technical guidance of protection and control system on regional power grid -- Part 2:Information interface and communication (TEXT OF DOCUMENT IS IN CHINESE)

$48