Purity reports, CTQ dimensional checks, SiC or TaC coating verification, clean handling, and export packing evidence for high-value crystal growth, epitaxy, and furnace programs.
The report package should match process risk. A dry pump vane does not need the same evidence as a SiC PVT crucible, but high-value semiconductor programs should define the evidence boundary before sample production.
| Control Area | Method | Buyer Question | Evidence Output |
|---|---|---|---|
| Trace metal and ash control | ICP-MS / COA scope by project; GDMS can be aligned where required | Which elements are restricted, what limits are accepted, and is the report batch-specific? | Ash target, restricted-element list, lot COA, or agreed trace-element table. |
| Dimensional metrology | CMM, caliper, optical, flatness, and CTQ feature checks | Which dimensions affect furnace fit, wafer contact, sealing, or post-coating assembly? | First-article report, CTQ dimensional record, or sampling plan. |
| Coating verification | Visual inspection, coating map, thickness target, coupon check, or project-defined method | Which surfaces must be coated, masked, polished, or protected after coating? | Coating map, visual photos, thickness target, and surface acceptance criteria. |
| Clean handling and export packing | Clean handling route, vacuum bagging, separators, foam nests, crates, and labels | Can the part stay clean and undamaged after international transport? | Packing photos, labels, carton/crate method, and shipment document set. |
For SiC PVT, epitaxy, MOCVD, and TaC coated components, buyers should define restricted elements before production. This avoids vague purity claims and turns acceptance into a measurable file.
Semiconductor graphite and coated parts can lose value after good machining if dust, fingerprints, abrasion, or crate impact are introduced at the last step. Packing is treated as part of the quality plan, not only logistics.
Freeze process, product family, restricted elements, CTQ dimensions, coating map, and packaging requirements before quote lock.
Match report scope to risk: industrial visual check, dimensional first article, coating record, trace-element table, or clean packing evidence.
Avoid re-contamination by aligning graphite machining, purification, CVD SiC or TaC coating, final inspection, and sealed packing in the right order.
Ship with agreed photos, reports, labels, revision references, and export packing documentation for buyer-side qualification files.
Inquiry Email
Include process, product type, drawing status, purity/coating target, dimensions, quantity forecast, operating conditions, and delivery date.
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+8618857971991
Best for quick drawing checks, process fit questions, and RFQ clarification.
