Questions buyers ask us first

One unit per model. Fans, dampers and tanks are built to order, so a single sample or a first-article unit is a normal order for us. Mixed containers are welcome: a 40 ft container can combine fans, dampers and duct fittings from one production run.

Standard fans and dampers: 15–20 working days. Custom casing angles, special voltages or stainless steel: 25–30 working days. Modular water tanks and cooling towers are quoted per project schedule — typically 20–35 days depending on panel volume and site access.

30% T/T deposit with the balance against the bill of lading copy; L/C at sight for orders above USD 30,000. Prices are quoted FOB Qingdao by default, with CIF, CFR, DAP and DDP available on request.

Seven CCC certificates cover the smoke extraction range — numbers 33122XF1376 to 33122XF1382, valid 2022-08-11 to 2027-08-10, issued through TiGroup (CNCA-R-2017-331). The smoke duty is verified to XF 211-2009 at 280 °C for 30 minutes; tunnel duty is 250 °C for 60 minutes.

No. Our certification is Chinese CCC, plus type-test reports to GB 15930-2007 and XF 211-2009. CE and UL are not held, and we will not present FDA as a fan certification — it does not apply to air-moving equipment. If your project requires CE marking we will say so before quoting rather than after.

Yes. Every quotation for a smoke product includes the matching CCC certificate number and the type-test report reference. Full scans of the 21 documents we hold can be sent as a PDF set for tender submission.

Yes — drawing-based manufacture is the default for export orders. Send a dimensional sketch or a BIM/IFC extract and we return a marked-up drawing for approval before cutting sheet. Casing orientation, inlet and outlet angles, motor position, drain and access doors are all set at that stage.

380 V/50 Hz as standard, with 400 V, 415 V, 440 V/60 Hz and 220 V single phase available. Motors can be inverter duty, dual speed, or supplied with a matched VFD. Explosion-proof and high-temperature motor variants are quoted separately.

Each unit sits on a timber pallet with the impeller locked, the casing wrapped in VCI film and the assembly in a plywood crate. Tank panels are edge-protected and banded in bundles by panel thickness. We photograph the packing list before the container is sealed and send it with the shipping documents.

Commercial invoice, packing list, bill of lading, certificate of origin (Form E or Form A on request), CCC certificate copies and the installation manual. Declaration of conformity and test reports can be added for customs or consultant review.

Twelve months from commissioning or eighteen months from shipment, whichever comes first. It covers manufacturing defects in the casing, impeller and motor. Wear parts, damage in transit and incorrect installation are excluded; we still supply replacement parts at cost.

Installation manuals are supplied in English with wiring diagrams and torque tables. For tanks and cooling towers we provide a site assembly sequence and a video call during first fill. On-site supervision can be arranged for large projects, quoted as a separate line.

Yes. Give us the required airflow in m3/h, the system static pressure in Pa, the duty (smoke extraction or ventilation), the ambient and gas temperature, and the available plant-room dimensions. We return two or three models with the duty point marked on the curve and the fan power at that point.