File Confidentiality & Upload Guidance

Share models and drawings only when you are authorized to provide them for project review. An initial discussion can use a non-sensitive description before restricted information is exchanged.

Before uploading

  • Discuss NDA requirements and restrictions on disclosure before sending protected material.
  • Identify the part number and revision, and include only files needed for the enquiry.
  • Remove unrelated personal information, credentials and documents outside the project scope.
  • Use STEP or IGES for suitable 3D geometry and a dimensioned PDF for controlled requirements. Mesh files do not communicate every manufacturing tolerance.

What the website does

Supported models and drawings upload directly to private Alibaba Cloud OSS storage in Hong Kong. The website saves enquiry details and file references for manual review; it does not calculate or approve a manufacturing price automatically. The current upload limits are shown by the upload component. Project files are not publicly listed in the WordPress media library, and authorized backend download links expire after a short period.

After submission

Keep the enquiry reference displayed on the confirmation. Use it when discussing revisions, withdrawal or file-handling questions. A submission confirms receipt of an enquiry record, not technical acceptance, NDA acceptance, an order or a committed delivery date.

Deletion and special handling

Unsubmitted files become eligible for scheduled cleanup after seven days. Submitted attachments are not currently removed automatically. Contact JUNCHU with your enquiry reference if a file must be corrected, withdrawn or reviewed for deletion. Agree any special handling or onward-disclosure restrictions before uploading.

Read the Privacy & Project Data notice or discuss your request.

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