Leading Top Union is an engineering and manufacturing service provider based in Suzhou, China. Our founder brings 17 years of hands-on industry experience (personal track record since 2008). We coordinate a network of certified partner factories to deliver steel procurement, structural fabrication and precision machining for EPC and OEM projects at home and abroad.
A Suzhou-based hub connecting mature manufacturing capacity with project customers worldwide
Beams, columns, platforms, supports and stair structures fabricated to drawing, with welding carried out by certified partner factories working to EN 1090 EXC3 and ISO 3834-2.
Explore fabrication →CNC turning, milling and drilling with tight control of dimensional tolerances — suited to equipment parts, chamber components and machined assemblies.
Explore CNC machining →Procurement of common carbon and stainless steel grades, profiles and plate, matched to project requirements to control both cost and lead time.
Explore steel supply →Build-to-print chamber structures, flanges and leak-test jigs for vacuum OEMs and system integrators
304/316L stainless and aluminium chamber bodies, doors, viewports and electrode ports, with precision sealing faces and O-ring grooves.
Chamber machining →CF / KF / ISO flanges, blanks, viewport adaptors, feedthroughs and spools, with controlled bolt-hole and sealing-face accuracy.
Flange machining →Jigs, blanks and clamping fixtures for chamber and pipeline leak testing, made to drawing.
Fabrication support →Proven supply-chain coordination that takes the load off your project
A local Suzhou team reachable by phone, WeChat or email, responding to inquiries the same working day.
Production runs at partner factories holding EN 1090, ISO 3834-2 and ISO 9001 certification, for traceable quality.
From raw material to pre-shipment release, each stage is checked against our inspection procedure and documented.
Clear delivery schedules with milestone updates — a good fit for projects with fixed construction windows.
Send us your drawings, quantities and delivery requirements — we reply within the same working day.
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