June 2026

Dear reader,

Infrastructure engineered to endure.

This letter serves as an introduction to Peng Rock, a systems engineering practice based in Zunyi, Guizhou. We design, integrate, and manage enterprise technology infrastructure for organisations that treat reliability as a requirement, not an aspiration. Our approach is straightforward: we assess what exists, design what is needed, execute the plan with rigour, and stand behind the result.

We are a brand of Zunyi Sun Pengyan Network Technology Co., Ltd., registered in Zunyi, Guizhou, China. Our engineers come from backgrounds in network architecture, cloud engineering, cybersecurity, and enterprise software integration. Every member of our team holds relevant industry certifications.

• Cloud Architecture. Enterprise cloud strategy across AWS, Azure, and GCP, including workload assessment, migration planning, cost governance, and security architecture for hybrid and cloud-native environments.
• Network Infrastructure. High-availability network design including SD-WAN, MPLS, multi-site connectivity, segmentation for compliance, and performance engineering for distributed operations.
• Cybersecurity Programs. Zero-trust architecture, threat detection, incident response, and compliance frameworks aligned with SOC 2, ISO 27001, and regulatory standards.
• Systems Integration. API gateways, event-driven architectures, and custom middleware that connect enterprise platforms into unified, auditable workflows.
• Managed Operations. Proactive monitoring, incident management, capacity planning, and performance tuning as a fully managed service for organisations that need enterprise reliability.

Every project follows four phases. First, we discover what exists and what needs to change. Then we design a solution on paper, review it with your team, and revise until it holds up. Deployment happens in controlled stages, with testing at every milestone and rollback procedures ready before we start. After go-live, we stay for monitoring and tuning.

Peng Rock redesigned our network infrastructure across four locations. The project was delivered on time, under budget, and our downtime dropped by 80 percent in the quarter after deployment.

— Wei Sun, CTO, Horizon Logistics