GB/T 20405.4-2025 Chinese PDF (GB /T20405.4-2025) GB/T 11842-2025 2-2025_Chinese: Uncut finished spectacle lenses

2-2025_Chinese: Uncut finished spectacle lenses - Part 2: Power-variation (Chinese: 眼镜镜片 第2部分：渐变焦)

English versions: GB/T 20972

English versions: GB/T 21099

7-2025_Chinese: Quality requirements for starch sugar - Part 7: Trehalose (Chinese: 淀粉糖质量要求 第7部分：海藻糖)

English versions: GB 39800

GB/T 20405.4-2025 Chinese PDF (GB /T20405.4-2025) GB/T 11842-2025 2-2025_Chinese: Uncut finished spectacle lensesGB T 20405. 4 2025_Chinese: Urine absorbing aids for incontinence Polyacrylate superabsorbent powders Part 4: Test method for the moisture content as weight loss upon heating (Chinese: 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20405. 4 2025