Distributor / OEM / project support
A structured complaint channel for B2B ventilation fan projects.
Use this form when an order, product sample, batch shipment, document package, or field installation does not meet expectation. Clear model data, photos, operating conditions, and order references help us shorten the technical review and corrective-action cycle.
product quality shipping damage warranty claim wrong model missing documents after-sales service
For complete submissions, the first case confirmation is normally prepared within one business day. Technical or warranty cases may require inspection records, fan curve data, or returned samples.
24hinitial case confirmation
2-5dtypical technical review window
Complaint details
Case intake formComplaint category * Priority * Problem summary *
Contact information
Your name * Company * Country / region * Email * Phone / WhatsApp Customer role
Order and product data
Order / PO / invoice number Product model * Serial / batch number Quantity affected Product category Application Date received Date issue found
Issue description and evidence
Detailed description *
