Procurement confirmation for Shengyi S1000-2M requires more than matching the grade name. The manufacturer's document portal lists material information by manufacturing site and provides processing guides, SDSs, and test reports separately. The manufacturing site, core or prepreg construction, and document revision must correspond to the actual incoming material before determining whether existing approval still applies.
Establish complete material identity first
As checked on 2026-10-17, the manufacturer's search portal lists S1000-2M documents for Jiangxi, Suzhou, and Shaanxi Shengyi dated 2026-01-05, and a Guangdong Shengyi document dated 2024-08-24. These portal dates identify the public document entries; they do not automatically indicate a formulation change or a report's validity period.
Material identity should include at least the manufacturer, site, full grade, core or PP designation, thickness, glass/resin construction, copper foil, and lot. The name on a distributor's invoice may differ from the actual manufacturing site. Establish the relationship through labels, certificates, and supply documents rather than inferring the production location solely from a distributor's statement.
What question does each of the four documents answer
| Document | Primary Use | Non-Substitutable |
|---|---|---|
| Product Data Sheet | Material parameters, conditions, and supply structure | Measurements for every finished-board lot and all reliability results |
| Processing Guide | process starting point such as lamination, drilling | The process window approved by the fabricator for this construction |
| SDS | Material safety and handling information | High-frequency parameters, performance guarantees, or end-product compliance conclusions |
| Inspection Report | Test results for specific samples and projects | Unlimited coverage of all sites, thicknesses, and future lots |
A missing document cannot be replaced by the name of another document category. For example, having an SDS does not establish dielectric data for the target thickness. A test report that names the grade still requires checks of its sample, site, and test items. The manufacturer's directory establishes that a document entry exists; do not fill in parameters that the directory does not disclose.
How to assess impact when supply base changes
- Obtain full identities and corresponding documents for the old and new lots without first merging them into one record.
- Check whether old and new constructions match, including cores, PP, copper foil, thicknesses, and options.
- Compare thermal, electrical, mechanical, and processing information using consistent methods, marking missing or noncomparable fields.
- Determine whether samples, specific validation, or customer approval are needed under product change requirements.
- When approving, specify the product, stackup, site, and changeover lot, and update procurement and production references.
Do not assume in advance that the same grade from different sites is necessarily different or fully equivalent. Base the decision on documents and samples. If old and new data use different methods, retain and clarify the differences rather than selecting the more favorable value to justify substitution.
Example record of a supply switch
Suppose project P uses two core constructions and one PP construction, with the old supply from site A and the new quotation from site B. The changeover table should list all three constructions rather than one row labeled 'S1000-2M.' If documents are complete for both cores but the PP resin construction is unconfirmed, document completeness can be recorded as 2÷3≈66.7%. This percentage measures only documentation status for those three constructions; it does not mean material performance is 66.7% compliant.
| Structural Item | New Facility Verification | Resolution |
|---|---|---|
| Core Board C1 | Thickness, copper foil, and parameter conditions can correspond | Review affected impedance groups |
| Core Board C2 | File version obtained, batch awaiting incoming materials | First article verification label and representative structure |
| PP-P1 | Resin structure and supply options not confirmed | Keep the status pending confirmation; do not assume it matches the previous material |
| Approved Scope | Cover only project P specified stackup | Other products continue to reference the original approval status |
Sites A and B and the codes in this example illustrate a recordkeeping method. Actual orders must use real manufacturer and construction identifiers; the example must not be presented as company supply history.
Align numerical comparison methods and objects first
Tg may be measured by different methods. Dk and Df require frequency, method, direction, and construction details, while thickness must distinguish nominal from finished values. If numbers in the manufacturer's documents appear to conflict, first locate the page, test conditions, and material construction. Do not retain only an unconditional 'standard value' in the procurement table.
Changes only to report formatting or contact details may not affect the physical material. Changes to resin systems, glass reinforcement, copper foil, or covered sites require further analysis. List document differences, physical differences, and validation differences separately in the change table so approvers know exactly what they are approving.
How to form a traceability chain for first articles and batches
Link material lot numbers to production lots, board IDs, and fabrication revisions. Select representative hole groups, interlayer structures, and critical nets for dimensional, cross-section, electrical, or impedance checks, with specific items determined by the change's effects. Visual inspection alone does not cover dielectric-thickness and electrical changes, and repeating unrelated checks does not compensate for failing to represent critical structures.
Incoming records should retain labels, certificates, receipt dates, and storage conditions. Fabrication records should retain material orientation, lamination, and hole-processing routes. If old and new lots are mixed, identify the boards on which each was used so later analysis can trace more than a generic order number.
After sample approval, update the alternate-material list and controlled stackup rather than releasing material only in a procurement chat. Check repeat orders against the approved site and construction, and repeat the impact assessment for temporary supply transfers or new specifications.
What to do when documents do not match physical items
If a label omits the manufacturing site, obtain traceable evidence from the supplier. If a report's sample name is incomplete, clarify its sample scope. If a new document omits a previous parameter, record the gap and confirm its intended use; do not keep the old number while removing its source. If actual material falls outside the approved scope, retain the lot's status, identify products already using it, and let the responsible project team determine validation and disposition.
Do not infer material shelf life from a website directory's publication date or extend one site's public report to all materials from other sites. Keep conclusions within the scope of the evidence, with lots, constructions, and documents traceable to one another.
For the first supply from another site, receiving confirmation can begin with a minimum document set: actual label, supplied construction, corresponding datasheet, and approval scope. Add further checks based on differences rather than asking the supplier to resend every document unrelated to the change. Retain an itemized checklist for document completeness so the next review can identify what actually changed.
How does documentation status reach the material-issue process?
Documentation received, technical review passed, prototype validation completed, and production approved are different statuses. The material list must let material-issue personnel identify currently authorized sites and constructions. A new report in a shared folder does not itself mean material approval. Record the responsible person, basis, and applicable lots for each status change.
If a construction is approved for prototypes but production validation is incomplete, state the permitted use and quantity scope. Temporary approval also needs a defined object and end condition; one email must not become a permanent project-wide substitution basis. Separately check continued use of old inventory against its original approval status and actual storage condition.
If a shop-floor label does not match the list, first determine whether this is an abbreviation, a distributor's relabeling, or an actual material change. Retain photographs, delivery notes, and the corresponding lot instead of losing original information by applying a familiar name. Only after identity is confirmed can the applicability of existing documents be determined.
If a quality issue arises later, traceability should identify which boards used each material lot and which approval revision applied at that time. A supplier name without construction and lot information makes it difficult to define the investigation scope. Recording information at receipt and material issue is more reliable than reconstructing it from multiple parties' chats after failure.
Frequently Asked Questions
Can same part number be exempt from change?
First check whether the original approval covers the new site and construction, then decide under the product's rules. Matching names do not replace verification.
Can SDS prove Tg or loss
Its primary purpose is different. Obtain the corresponding datasheet and conditions. For more information, see Digital stackup version, Manufacturing Combination and Document List.
Source material and applicable scope
- Shengyi Technology, Official S1000-2M document search results; version: no unified webpage revision is specified; dates are listed for individual entries; checked 2026-10-17; relevant sections: site-specific material documents, laminate/prepreg SDSs, SGS reports, Line up, and processing-guide links; scope: supports the need to cross-check different sites and document categories only. The directory is not a basis for inventing Tg, Dk, or supply equivalence.
