B2B SUPPLIER EVALUATION · UPDATED 13 SEPTEMBER 2026
A reliable supplier should provide traceable model data, explain selection assumptions, confirm electrical and mechanical fit, define kit contents, answer document requests and state commercial terms in writing. For wholesale buyers, verifiable evidence is more useful than blanket claims.
SIX CHECKS BEFORE A WHOLESALE ORDER
Ask for model-specific voltage, phase, power, torque, output speed, lifting height, chain and roller information. Do not accept one generic specification for every rating.
Give the supplier the door type, opening dimensions, curtain mass, lifting height, shaft or drum arrangement, installation exposure and expected operating cycles.
Confirm the available voltage, single-phase or three-phase supply, exact frequency, controller and local electrical requirements before production.
Request a packing list that identifies the motor, controller, remotes, chain-drive components, brackets and other agreed accessories. A product image is not a packing list.
Name the destination market and request the exact certificate, test report, declaration, drawing or manual you need. Check that each document applies to the quoted model.
Record the quantity by configuration, branding scope, order-preparation time, warranty coverage, spare-parts process and shipping responsibilities in the quotation.
RFQ EVIDENCE TABLE
Use these inputs before comparing price. They reduce ambiguity around product fit, included components, documents and order terms.
| Decision | Buyer should provide | Supplier should return |
|---|---|---|
| Motor selection | Door type, dimensions, curtain mass, lifting height, shaft or drum details | A model recommendation tied to the actual application |
| Electrical fit | Voltage, phase, frequency and control requirement | A written electrical configuration; no country-based assumption |
| Published parameters | Model code and parameter sheet | Model-specific values without interpolated or copied figures |
| Kit definition | Required controls, remotes, chain parts, brackets and accessories | A written packing list for the quoted configuration |
| Compliance | Destination and exact document list | Genuine, applicable documents confirmed before order acceptance |
| Order terms | Quantity by model, branding, packaging and destination | MOQ, lead time, warranty and shipping scope stated in writing |
A suitable supplier should provide model-specific data, explain selection assumptions, confirm electrical and mechanical fit, define kit contents, answer document requests and state commercial terms in writing. Evidence is more useful than broad claims such as universal compatibility or guaranteed suitability.
Include the door type, opening dimensions, curtain mass where known, lifting height, shaft or drum arrangement, voltage, phase, frequency, operating cycles, controls, quantity by configuration, destination, required documents and private-label or packaging request.
No automatic interchangeability should be assumed. Compare torque, output speed, roller diameter, chain, voltage, phase, frequency, controller, mounting and the real door mechanism, even when two products use the same kg label.
Request the exact document needed for the destination market and check the manufacturer name, model reference, issuing body, scope and validity. A logo on a page or a certificate for another model is not proof for the quoted configuration.
Unit price is only one input. Compare product fit, included components, documentation, repeat-order consistency, packaging, warranty, spare-parts handling, shipping scope and the cost of installation rework or mismatched controls.
YERQI publishes a standard motor MOQ of 200 units, a typical order-preparation lead time of about 15 days after details are confirmed, a 1-year motor warranty and private-label discussion for qualified wholesale orders. Final terms are confirmed in the quotation.
Copy the RFQ template → · Prepare the technical motor requirement → · Check control compatibility → · Review OEM order terms →
YERQI product parameters are based on the owner-supplied AC/DC parameter sheets reviewed on 6 September 2026. Suitability, safety devices and local compliance remain configuration-specific.REQUEST A CHECKABLE SUPPLIER RESPONSE
Include the application, electrical supply, operating use, controls, quantity, destination and required documents.