Case Study: Oxygen 2.0 achieves 5x increase in monthly retainer revenue and repeatable, measurable client ROI with HubSpot

Agency Partner Oxygen 2.0 Serves the Chinese Market with Repeatable Success, Sees 5x Increase in Monthly Retainer Revenue

Oxygen 2.0 is a Shenzhen– and Hong Kong–based full-service inbound marketing, branding and web development agency and HubSpot’s first partner in China. Serving clients who want to grow sales-qualified leads in the Chinese market, they struggled with a patchwork of tools (email, social, landing pages, CMS, CRM tied together by Zapier) and lacked a coherent way to prove ROI or justify client marketing spend.

By adopting HubSpot and the inbound methodology, Oxygen consolidated tools, built a repeatable campaign model, and implemented closed‑loop reporting and lead nurturing (including WeChat integration). The result: predictable, measurable campaigns that increased average monthly retainer revenue 5x, drove a 3,000% traffic lift for one client in 12 months, improved lead qualification and retention, and allowed the agency to scale higher‑value, longer‑running engagements.

Oxygen 2.0

Daniel Beach

Managing Director