การผลิตและคุณภาพ

การผลิตและคุณภาพ

เมื่อล็อตตก EN 1811: ชุบใหม่ ทดสอบใหม่ และเส้นตัดทิ้งอยู่ที่ไหนจริง ๆ

Short answer: Sometimes, but not on the same evidence. A failed EN 1811 batch can be stripped and re-plated when the nickel comes from the coating system itself: a nickel strike or underplate, a contaminated plating bath, or a coating that is too thin at an edge. It should be scrapped when the nickel sits ... <a title="When a Batch Fails EN 1811: Re-Plating, Retesting, and Where the Scrap Line Actually Is" class="read-more" href="https://amarajeweiry.com/th/en1811-failed-batch-replate-or-scrap/" aria-label="Read more about When a Batch Fails EN 1811: Re-Plating, Retesting, and Where the Scrap Line Actually Is">Read more</a>

ต.ค. 19, 2026 · 10 min read Read →

การผลิตและคุณภาพ

แหวน S925 ตรวจได้เงิน 91.8%: เกณฑ์ 4/1000 ช่องว่างสำหรับยางบัดกรี และเมื่อไรควรเปิดการเคลม

At 91.8% silver, an S925 ring is three parts per thousand away from two different verdicts. Under 15 U.S.C. § 296, a 925 mark allows a 4/1000 deviation on the solder-free silver, so the floor is 921‰; at 918‰ the ring fails by 3/1000 and the result supports a claim. If the laboratory assayed the ... <a title="S925 Ring Assayed at 91.8% Silver: The 4/1000 Rule, the Solder Allowance, and When to Raise a Claim" class="read-more" href="https://amarajeweiry.com/th/s925-assay-918-silver-tolerance/" aria-label="Read more about S925 Ring Assayed at 91.8% Silver: The 4/1000 Rule, the Solder Allowance, and When to Raise a Claim">Read more</a>

ต.ค. 18, 2026 · 11 min read Read →

การผลิตและคุณภาพ

สลักเลเซอร์ชื่อแบรนด์ข้างตรา 925: กฎตำแหน่ง ระยะเวลาผลิต และต้นทุนต่อชิ้นในล็อต 10,000 วง

Short answer: On a 10,000-unit S925 ring run, laser etching your brand name adds days rather than weeks, and a small per-piece charge once the mark file and fixture exist – but placement is a legal decision before it is a design one. Under the National Gold and Silver Stamping Act, 15 U.S.C. § 297(b), ... <a title="Laser Etching Your Brand Name Next to the 925 Stamp: Placement Rules, Lead Time, and Per-Unit Cost on a 10,000-Ring Run" class="read-more" href="https://amarajeweiry.com/th/laser-etching-925-hallmark-lead-time-cost/" aria-label="Read more about Laser Etching Your Brand Name Next to the 925 Stamp: Placement Rules, Lead Time, and Per-Unit Cost on a 10,000-Ring Run">Read more</a>

ต.ค. 17, 2026 · 10 min read Read →

การผลิตและคุณภาพ

ทองเหลืองโผล่ใต้ S925 ชุบสามเดือน: การทดสอบรับของ ข้อสัญญา PO และใครจ่าย

Direct answer: Bronze showing through a plated S925 chain three months into retail is not proof of wearer abuse, and it is not automatically a plating defect either. Color alone cannot separate the two, because a silver sulfide film reads yellow-brown before it reads black, while a brass substrate that was marked 925 reads bronze ... <a title="Bronze Showing Through Plated S925 in Three Months: The Receiving Test, the PO Clause, and Who Pays" class="read-more" href="https://amarajeweiry.com/th/%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B9%80%E0%B8%AA%E0%B8%B5%E0%B8%A2%E0%B8%AB%E0%B8%B2%E0%B8%A2%E0%B8%8A%E0%B8%B8%E0%B8%9A-%E0%B9%83%E0%B8%84%E0%B8%A3%E0%B8%88%E0%B9%88%E0%B8%B2%E0%B8%A2/" aria-label="Read more about Bronze Showing Through Plated S925 in Three Months: The Receiving Test, the PO Clause, and Who Pays">Read more</a>

ต.ค. 16, 2026 · 10 min read Read →

การผลิตและคุณภาพ

การประทับตรา UK และ EU สำหรับเครื่องประดับเงิน S925: สี่ตรา สำนักงานตรวจสอบ และแฟ้มที่ผู้ซื้อของคุณคาดหวัง

Short answer: A US or EU retail chain will not review an S925 silver line until four folders exist: commercial documents (licence, tax ID, insurance, NDA), a compliance pack (third-party test reports for nickel release, lead, cadmium and REACH or CPSIA limits), quality records (AQL inspection results, fineness and plating data), and UK/EU hallmarking evidence. ... <a title="UK and EU Hallmarking for S925 Silver Jewelry: The Four Marks, the Assay Office, and the File Your Buyer Expects" class="read-more" href="https://amarajeweiry.com/th/%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%97%E0%B8%B1%E0%B8%9A%E0%B8%95%E0%B8%A3%E0%B8%B2-uk-%E0%B9%81%E0%B8%A5%E0%B8%B0-eu-%E0%B9%80%E0%B8%87%E0%B8%B4%E0%B8%99-s925/" aria-label="Read more about UK and EU Hallmarking for S925 Silver Jewelry: The Four Marks, the Assay Office, and the File Your Buyer Expects">Read more</a>

ต.ค. 15, 2026 · 10 min read Read →