Huzhou Yaoniu Ductwork

Separate the legal supplier, fabrication site and installation team

The footer publishes addresses in Zhejiang, Nanjing, Anhui and Henan. The introduction does not establish their separate legal identities or which workshop will manufacture an order. Request the contracting entity, the actual fabrication address and the installation or subcontracting scope in the offer. Company branding alone does not settle those responsibilities. (Sources 1 and 2.)

The introduction describes design, installation and commissioning as services. This does not establish a commissioning result for the buyer's project or a universal destination-market approval. Ask who is responsible for drawings, material approval, site measurement, installation inspection and final acceptance.

Use the machinery descriptions to ask focused production questions

The company names SPIRO-related spiral-duct and fitting equipment, including JPX forming, R1530 plasma cutting and CU-30 seam joining, plus locking, punching, folding, shearing and flange-forming equipment. It also lists automated rectangular lines, laser equipment and angle-flange welding. These are company-published equipment statements without an independent asset audit, current machine-condition report or tolerance schedule. (Source 2.)

The daily-output and cost-saving claims need a basis

The homepage states 3,000 square metres per day for rectangular ducts and 300–1,000 metres per day for round ducts. The introduction separately says daily output of ten thousand square metres. Neither reviewed page defines whether the figures concern one line, one site, all sites, one shift, a particular material or the same product mix. They cannot be combined into a verified plant capacity. (Sources 1 and 2.)

Ask for the order-specific production slot, drawing quantity, material availability, inspection scope and delivery schedule. The homepage's 30% cost-saving wording also lacks a comparable baseline and project conditions, so it is not used as a promised saving or quote discount.

Historical quality-system wording is not current certification

The introduction says its quality system was established according to ISO9002. It gives no certificate number, issuer, holder, edition or current status. ISO's own record marks ISO 9002:1994 as withdrawn. The company statement therefore cannot be presented as current certification or as product conformity. (Sources 2 and 5.)

An exact Chinese-name search restricted to government domains returned no matching public result during this review. That search gap is not proof that the company lacks registration or approval. Obtain current legal and quality documents, identify their scope, and verify them with the issuing body where relevant.

The site names projects such as metro, commercial and pharmaceutical buildings, but the reviewed homepage does not establish contract scope, completion, client acceptance or current reference permission. These remain supplier-published project names, not independently validated deliveries.

Build an order around the drawing and inspection revision

A useful enquiry for this supplier identifies the required fabricated assemblies, rather than asking only for galvanized ductwork. The steps below are editorial procurement guidance, not a description of an already completed Yaoniu order.

1. Freeze the construction schedule

   Provide geometry, sheet grade and coating, sheet thickness by section, seam, flange, reinforcement, accessories and drawing revisions. Separate insulated, welded and spiral work where their construction differs.

2. Agree the inspection basis

   Specify dimensions and tolerances, material records, joint/seal requirements, pressure and leakage acceptance, and the evidence required for any special fire or clean-room duty.

3. Confirm production and site responsibility

   Name the actual fabrication site, agreed production slot, shipment identification, installation scope and handover records. Resolve the conflicting output statements before relying on a schedule.