Background
A Singapore-registered semiconductor equipment and consumables trading company with Japan-linked engineering heritage has sourced PCB Aluminum Entry Board & Lubricant Entry Sheet from YUESHAN since 2017. The partner serves a major Philippine OSAT (Outsourced Semiconductor Assembly and Test) facility as its end customer, maintaining strict requirements on thickness tolerance and surface quality.
The relationship has remained active across multiple annual shipment cycles — a testament to process discipline and pricing transparency in a volatile raw-material market.
The Challenge
- Tight thickness tolerance — 0.18 mm aluminum entry board with strict gauge control for precision semiconductor packaging drilling.
- Aluminum price volatility — Raw aluminum spot price swings required a transparent, formula-based price adjustment mechanism rather than periodic renegotiation.
- Historical claim risk — Past claim experience meant pre-shipment self-inspection and complete records were mandatory for both sides.
The Solution
YUESHAN supplied Aluminum Entry Board 1100 H18 with disciplined process controls:
| Parameter | Specification | Control |
|---|---|---|
| Alloy / temper | 1100 H18 | Full-hard temper for burr-free entry |
| Thickness | 0.18 mm | Strict gauge tolerance, pre-shipment self-inspection |
| Surface | Oil-free | No panel contamination |
| Packaging | 1,000 pcs/pallet (Japan-standard size) | Matches end-user handling |
Why the partner stayed for 8+ years:
- Process discipline: Pre-shipment self-inspection and retained test records addressed historical claim risk — every batch traceable.
- Price transparency: Aluminum formula (SMM spot + surcharge) enabled fair adjustment as the market moved, avoiding the friction of periodic price renegotiation.
- Continuity: Consistent quality across years of recurring orders with no supply interruptions.
The Result
- 2017: First contract signed; qualification passed with strict thickness control verified.
- 2025: Multiple shipments with full CI/PL/BL documentation — no claims.
- 2026: New PO issued; aluminum spot price rose approximately 9%, triggering a formula-based price-adjustment request handled transparently.
The partner's operations valued reliable documentation flow (CI/PL, bill of lading, export files), proactive communication on raw-material price moves, and quality consistency that minimized claim exposure over nearly a decade.
Why This Matters for Similar Traders
This engagement shows YUESHAN's fit for trading companies serving semiconductor packaging:
- Strict thickness and surface controls meet OSAT-grade requirements for precision drilling.
- Transparent aluminum pricing formula handles volatile raw-material markets without annual negotiation cycles.
- Documentation and process discipline reduce claim exposure over long relationships. See our Aluminum Entry Board page for full specs.
For more on pricing models, read about our How We Compare to L.C.O and entry board product overview.
Your Next Step
If you are a trading company serving semiconductor packaging or PCB drilling, send us your aluminum entry board specs (alloy, thickness, surface), your pricing-model preference (formula vs fixed), and your documentation and inspection requirements. We will provide a matched supply and pricing plan. Comparable long-run supply arrangements are collected in our PCB drilling case studies.
Note: this is a representative customer scenario drawn from our own supply records. Client identity is withheld — country and industry descriptions are used in place of company names, and no specific customer has authorised disclosure of its name or data. Outcomes depend on each user's process, materials and equipment.