Verified configuration: LEAWOD’s official aluminum-door page shows folding, lift-and-slide, swing and French inward-opening door families, while the same page gives a Guanghan, Deyang, Sichuan address.

Buyer brief: name the required material family and opening mode, because the public range includes aluminum and wood-aluminum products. Request the proposed series, leaf layout, sections, glass, hardware, sill, screen, finish and applicable evidence. Treat any customization wording as a question to define—not proof that private labeling, tooling or engineering is included.

Verified configuration: YY’s official door range lists hinged aluminum, lift-and-slide, French, folding and patio-door configurations and provides a Pudong, Shanghai address. Its public product scope therefore spans swing and large-opening configurations.

Buyer brief: select one door type before requesting evidence. For a hinged door, require leaf dimensions, swing, hinge and lock schedule, threshold, glass and finish. If a performance program is cited, obtain the primary record and match the legal company, model, manufacturing site, specimen and limits to the quoted assembly.

Verified configuration: Rogenilan’s official door category includes casement, sliding, folding, lift-and-slide, entry and pivot products. The RGNL-120 Thermal Break Casement Door is one published hinged-system example, and the website lists a Foshan, Guangdong address.

Buyer brief: identify the exact series on every line of the opening schedule. Ask Rogenilan to return sections, glass, hardware, finish, screen, threshold, installation and document scope for that series. Because Rogenilan publishes this article, independently verify its entity, site, sample and contract to the same depth as any other candidate.

Verified configuration: Yangguang’s official site gives a Qingdao, Shandong address and identifies aluminum alloy doors and windows, thermal-break door-and-window systems and an integrated curtain-wall and engineering scope.

Buyer brief: require a specific door series before treating the broad system range as a match. Define hinged or sliding operation, glass, hardware, access-control needs, threshold, sidelights, anchors and surrounding facade interfaces. Ask the company to separate product supply, engineering and installation responsibilities and provide full applicable evidence rather than general qualification statements.

Verified configuration: NorthTech’s official aluminum-door category shows indoor sliding, conventional sliding, lift-and-slide, multi-track, narrow-frame, folding and patio doors. The page gives a Beijing address.

Buyer brief: choose the required operating family and ask NorthTech to mark moving and fixed panels, tracks, sill, drainage, glass, hardware and screens on the returned elevation and sections. If a catalog, report or listing is offered, compare its exact model and tested configuration with the project proposal rather than extending it to the full category.

Verified configuration: Superhouse publishes dedicated aluminum sliding-door and bifold-door pages. Its site identifies Shanghai as the head-office location and Qidong, Jiangsu as the factory location.

Buyer brief: reconcile the contracting entity, office and producing facility. For sliding doors, state panel and track layout; for bifolds, state panel sequence and stack. Request a system drawing, glass and hardware bills, sample, finish reference, report scope, inspection plan and packing design for the exact offered configuration.

Verified configuration: Finzone’s official aluminum-door page identifies Shanghai, aluminum alloy construction, double tempered glass and two- or three-track configurations. Its main site also separates aluminum doors from balcony-glazing systems.

Buyer brief: establish whether the opening needs a framed sliding door, folding/sliding glass system or another balcony enclosure. Confirm guard and safety boundaries, track and drainage details, glass support, locks, panel parking, replacement parts and package protection. Exclude unsupported page-level performance statements unless complete current evidence matches the quotation.

Verified configuration: EOSS’s official all-aluminum door-and-window page identifies the Shandong company and a Linqu County, Weifang address. Its product navigation includes sliding, inward-opening, outward-opening, narrow and thermal-insulated door-and-window families.

Buyer brief: determine whether the offer is a complete glazed door, a system package, components or technical support. Map drawings, profiles, hardware, fabrication, glazing, reports, training and installation guidance to the responsible entity, then define the inspection and acceptance record for each deliverable.

Verified configuration: Huakangda’s official product page lists a thermal-break aluminum and UPVC sliding door, while its factory page locates aluminum door-and-window production in Huai’an, Jiangsu.

Buyer brief: lock the frame material and clarify whether the quotation is supply-only or includes engineering or installation. Require the named door series, sections, panel map, glass, hardware, finish, threshold, inspection roles, packaging and entity names used for the contract, invoice and production records.

Verified configuration: Etaifeng’s official site gives a Shenyang, Liaoning address and lists system doors, folding doors and lift-and-slide doors within an integrated fenestration and facade scope.

Buyer brief: identify the system boundary and producing party before requesting a project quotation. For facade-adjacent doors, assign responsibility for calculations, perimeter conditions, anchors, drainage and installation. For sliding or folding doors, obtain controlled panel layouts, glass and hardware schedules, operating limits, sample gates and replacement-component records.