Choosing a Google SEO provider for a B2B website starts with a scope you can inspect, not a list of agencies with stars beside their names. Give each candidate the same site, market and product brief. Ask who will diagnose the problem, who can make changes, what evidence you will receive, and what you keep if the engagement ends. This article is published by Guangsuan, an SEO service provider; it is a buyer's method, not an independent ranking of other firms. Apply the questions to us too.
Start with the commercial problem the site has to solve
An agency cannot propose a useful scope from “get us more traffic” alone. Tell every bidder which countries you can serve, which products you can actually supply, the languages you can review, and which pages matter to sales. Include the site platform, the person who approves product facts, and any limits on changing templates or publishing content. If your sales team has a definition of a qualified inquiry, share it; otherwise agree on one before treating lead counts as a performance measure.
For a procurement brief, imagine an exporter with a catalogue of industrial components. This is an illustrative buying situation, not a client result. Instead of asking bidders to “rank our homepage,” ask them to identify the product or category pages they would examine first, the information a buyer needs on those pages, and the work your own developers would have to approve. A proposal that promises a specific position before seeing the website or target market needs an explanation of its assumptions. Google's guide to hiring an SEO recommends reviewing a prospective SEO's work and proposed changes; it does not certify a shortlist of agencies.
Find out who actually does the work
“Technical SEO” might mean an audit, a ticket for your engineering team, or a live change followed by a test. Ask for an example issue with the affected URL, the proposed fix, the owner and a way to verify the result after release. If a provider cannot edit your site, a diagnosis is still useful, but the contract should not call it an implemented fix.
For content, separate updates to existing product pages from new articles or topic pages. Who checks specifications, certifications and availability? Who supplies images and holds the rights to them? Where will the approved copy live, and can your staff edit it later? An impressive article count means little if your team cannot review the claims or publish the pages.
Links need their own description. Ask which pages receive them, what the delivery unit is, whether you get a placement record, how the provider handles removals, and when it checks the agreed status. Do not treat every link count as interchangeable. Guangsuan's own backlink combination page describes a layered mix of products: GPB is offered as one relevant original article and one independent domain per link; GNB targets one site's homepage and brand terms at scale; GMB covers multiple target URLs but explicitly has no per-link report and no long-term retention promise. Those are descriptions of our commercial services, not Google's endorsement of a link quantity or a guaranteed ranking effect. Compare another provider against its own actual terms, not against our product names.
Ask for evidence that matches the claim
If a case study shows a rising chart, ask what site and market it concerns, the date range, what else changed, and whether the client permitted the evidence to be shown. A redacted, permissioned review can be more informative than a screenshot without filters; you do not need another client's login. An integrated campaign may include site fixes, content and links, so the chart cannot isolate the effect of one component unless the underlying evidence does.
Keep a baseline for your own site before work begins. In Google Search Console's Performance report, check queries, pages, countries, devices and comparable date ranges. Search clicks and impressions show search activity, not the number of buyers sales accepted. Reconcile site inquiries with the sales record, including duplicate or out-of-market submissions. Do not let a rise in branded traffic stand in for improved visibility on the product searches you commissioned.
Protect access without blocking the project
A preliminary review often needs public URLs and, where appropriate, limited access to reports. It does not automatically require control of the domain, hosting account or site administrator credentials. For implementation, define who grants permissions, who signs off on a change and how activity is recorded. Keep core accounts under the client's control so another provider can continue the work later.
The handover is worth negotiating before a problem occurs. Specify how you will receive the audit, approved content, page-change log, publishing rights, placement records where the product provides them, and open tasks. If a service depends on provider-owned resources, spell out which items remain active and what maintenance or replacement obligation ends with the contract. A promise of “permanent links” should never be inferred from a package that does not make one.
Compare quotes by obligation, not by headline fee
Put each proposal on the same basis: sites and languages covered; one-off work versus ongoing work; who implements technical changes; how many approved pages and what kind; each link product and its evidence standard; report cadence; and separately billed translation, development, tools or taxes. Then compare the full contract period and the work still required from your own team. A monthly retainer, a fixed project and an annual package are different commitments even when the headline numbers look similar.
Our Chinese-language SEO service page publishes annual packages combining technical recommendations, content and link products. The published unit and included work are the starting point for checking a Guangsuan quote, not a market price benchmark. Confirm the live terms and written proposal before buying. If the budget will not cover the full brief, narrow the markets or pages rather than leaving deliverables undefined. No provider can contractually control the date on which a particular query reaches a particular position; the provider can specify its work, review points and what happens if an agreed deliverable is missing.
Send the same request to every candidate
For the attached site and target markets, show the issues you can already observe and the data you would need to confirm them. State what you will recommend, what you will implement, who approves each change, and what evidence we receive for pages, content and links. Give the full fee and exclusions, review dates, account permissions, and an exit inventory. Mark unknowns as unknowns rather than filling them with ranking forecasts.
Once the replies come back, separate missing information from an actual disagreement about strategy. A bidder who identifies the work your team must do may be more useful than one who says yes to everything. Ask for a written proposal tied to your site and test it against the questions above.