Sieyuan Limited is a Hong Kong-based trading company supplying high-voltage power equipment, switchgear and industrial machinery to utility, oil & gas and infrastructure customers worldwide.
We bridge world-class manufacturers in Asia with industrial end-users in Africa, the Middle East and Europe — focusing on long-cycle, mission-critical electrical and mechanical equipment.
Liquid-dielectric and dry-type transformers up to 500 kV class, equipped with on-load tap changers (OLTC), for substations and industrial complexes.
High and medium voltage switchgear, gas-insulated switchgear (GIS), circuit breakers, disconnectors and protection systems for utility and industrial networks.
Heavy-duty industrial machinery, motors, drives and electromechanical equipment for manufacturing plants, refineries and processing facilities.
Cross-border industrial trade is more than logistics. It needs someone who understands how the equipment will be installed, commissioned and operated for decades — and who will follow up when something goes wrong.
We are based in Hong Kong because that is where our manufacturing partners are within reach, and where a Mediterranean or African customer can deal with us in plain English, French or Arabic — without the layers of intermediaries that usually come with sourcing from Asia.
Our equipment powers critical infrastructure across the most demanding industrial sectors.
We source from established Asian manufacturers with proven track records in high-voltage equipment. On-site quality inspection and witnessing of factory acceptance tests is part of our standard process — not an option.
From the first technical discussion to post-delivery support, every project follows a clear sequence — and you have the same point of contact throughout. No transfers, no escalation chains, no finger-pointing between departments.
We start with your technical specification, your installation context, and the project constraints. Then we identify the manufacturers who can actually deliver — not just the cheapest catalogue.
Once an order is placed, we track production directly with the factory and keep you informed. When the equipment is ready for testing, our team is present at the factory acceptance test.
We coordinate transport, customs paperwork and the documentation package — including nameplates, manuals and test certificates in your working language (English, French or Arabic).
You receive a complete digital file of the project: photos, test reports, drawings, contacts. And if anything needs follow-up after delivery, we stay involved.
Industrial equipment without proper documentation is useless on the day the inspector arrives, the warranty claim is made, or the maintenance team takes over. We build the documentation as carefully as the order itself.
Our standard delivery package is designed so that on the day the equipment arrives at site, your team has every piece of paperwork they need to install, energise and operate it without going back to ask questions.
Reach out to discuss equipment specifications, sourcing strategy, project requirements or compliance documentation. We respond to all serious inquiries within one business day.
Contact Us