Quality & Documents
Documented capability.
Clearer decisions.
Explore the documents behind our equipment and inspection capabilities. Understand the model, the scope and the evidence before your next project.
Explore certificatesCertificate Library
Evidence, in detail.
Scans supplied by Yongtai. Dates, standards and model coverage are as printed; current issuer-registry status has not been independently verified. These documents do not establish approval in an overseas market.
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Credit recognition is not product certification or ISO certification. Institution approval is limited to the approved inspection category and site. English summaries are for reference; the original Chinese documents control.
Document Center
Prepare the right files before RFQ, tender or distributor review.
Need a model-specific datasheet, report or manual? Share your product, destination and tender requirements so our team can review the appropriate document pack.
FAQ
Before a project quotation.
What information is needed for a quotation?
Share the destination country, room drawings and dimensions, application, preferred system, quantity and required timeline. Product scope, documentation, packaging and commercial terms require review before a formal quote.
Does a product listing confirm local approval?
No. Certification scope, applicable standards, project requirements and local authority acceptance must be confirmed for the specific model and installation.
Can I discuss OEM/ODM or distribution?
Yes. Share your company, target market, business type and product interests through the cooperation draft on the contact page. Supply scope and any commercial commitment remain subject to review.
Does a certificate cover the entire product range?
No. Only the listed models and certificate scope are covered. Where a component schedule is supplied, read it together with the main certificate. Other models, test reports and destination approvals must be checked separately.
Is online sizing a final system design?
No. The sizing page collects early-stage room information. Agent quantity, equipment configuration, installation and acceptance require qualified engineering review.
Pre-sales Support
Prepare the questions that matter for your project.
Local draft only. No live AI service, external submission or automatic quotation is connected.
Project RFQ