GB 7917.1-1987.Standard methods of hygienic test for cosmetics Mercury.GB 7917.1...

国家标准2023.07.22

GB 7919-1987.Procedures and mothods of safety evaluatlon for cosmetles.5.1急性皮肤毒性...

国家标准2023.07.22

GB 7969-1987.Electric power cable paper.4检验规则4.1生产厂 应保证产品符合本标准的规定。每卷纸中应附有产品合格证。4...

国家标准2023.07.22

GB 7969-2003.GB 7969规定了电力电缆纸的产品分类、技术要求、试验方法检验规则和标志、包装、运输、贮存。GB 7969适用于额定电压不大于35k...

国家标准2023.07.22

GB 7972-1987.Telegraph tape paper for punchig.2.2纸条表面应平滑,并不允许有影响凿孔和发报的褶子、条痕、透光点、...

国家标准2023.07.22

GB 7973-1987.Paper , board and pulps-Measurement of diffuse reflectance factor (...

国家标准2023.07.22

GB 7974-1987.Paper and board- Measurement of brightness(Diff/o-geometry).GB 7974...

国家标准2023.07.22

GB 7975-1987.Paper and board-Measurement of colour(Diff/o-geometry).GB 7975采用国际照...

国家标准2023.07.22

GB 7976-1987.Insulating paper and board-Determination of the electrical conducti...

国家标准2023.07.22

GB 7977-1987.Paper , board and pulp一Determination of the electrical conductivity...

国家标准2023.07.22