Choosing an NdFeB Supplier: Verify the Production and Export Route

Ask how drawing questions reach the manufacturing engineers and how proposed changes return for approval. Request a sample report on a comparable process, with confidential customer information removed. Check that the report states what was measured and under which conditions. A polished brochure does not replace a qualification record.

Check the current certificate for the actual manufacturing entity, address and activity. Agree PPAP level and required reports for the order; a network relationship does not certify every plant or assembly. Match the certificate address and scope to the process used for the order. Check expiry and issuing-body verification. A supplier may contract with a certified plant without every company in its network holding the same certification.

Define the incoming tests, critical dimensions and lot-traceability fields. Request hot magnetic data for the intended material and test conditions for corrosion or assembly requirements. Agree how nonconforming material is contained and who approves a process or plant change. Treat PPAP level as a customer requirement to be agreed for the programme.

Grade suffixes and F/N/D series labels do not establish composition or export clearance. Classify the actual item and transaction with the exporter, including the parties, end use and route. See the export-control guide. Decree 792, Article 17 provides for an approval or refusal decision within 45 working days after acceptance, with exceptions and excluded assessment, expert-consultation and verification time.

This is not a fixed duration, a minimum wait or a guaranteed shipment date. Articles 15 and 18 distinguish single and general licences and require exports to stay within the authorization’s scope, conditions and validity.

Compare tooling, sample quantity, unit price, inspection, freight and the assumptions behind any landed estimate. Ask who holds the schedule and how late approval or a drawing change affects it. Agree tooling, sample quantity, inspection and production milestones in the quotation. Export release depends on any required authorization.

No standard prototype quantity or fixed delivery interval is promised here. The supply-chain structure alone cannot establish a standard markup, response time or extra delay.

Mainrich is an engineering and sourcing partner with equity stakes in a four-site production network. Parts are engineered and quality-controlled by Mainrich. Mainrich’s sintered NdFeB range is N30 to N56, with no AH grades. The top grade depends on the temperature series: N56, N54M, N52H, N52SH, N50UH and N45EH.

Grades up to N52SH can be made without a Chinese export licence, so we offer those first; UH and EH grades need a licence, applied for per order. Confirm the grade, suffix, geometry and production route for each drawing. This summary does not offer every combination; grades outside it in educational examples are not Mainrich supply offers. Send the drawing and qualification requirements so the specific route and records can be confirmed.