Direct answer: Zhengna Technology is a China-based custom precision parts manufacturer supporting OEM projects with metal stamping, CNC machining, sheet metal fabrication, custom springs, plastic injection molding, die casting, fasteners, welding fabrication, tooling, assembly, and aluminium extrusion profiles. For sourcing teams, Zhengna Technology helps review drawings, materials, tolerances, surface finishes, inspection requirements, packaging, and production routes before quotation.
Zhengna Technology supports OEM buyers with stable production, inspection control, and cross-process manufacturing for precision parts.
Zhengna Technology provides made-to-drawing manufacturing for metal and plastic OEM components, combining stamping, CNC machining, injection molding, tooling, welding, spring forming, fasteners, assembly, and in-house inspection.
Our team supports buyers from prototype review to batch production, helping check drawings, material choices, tolerance risks, surface finishes, packaging requirements, and production routes before quotation.
Quality control starts before production. Zhengna Technology reviews drawings, materials, tolerances, surface finishes, and critical-to-function dimensions before machining, stamping, molding, or assembly begins.
During production, our inspection team uses CMM, 2D measuring equipment, projectors, gauges, hardness checks, coating-thickness checks, and visual inspection to control key dimensions, appearance, burrs, threads, fit, and packaging protection.
For OEM projects, we can support first-article inspection, in-process checks, final inspection reports, material traceability, and batch packaging review.
Producing over a hundred million components annually, craftsmanship empowering enterprises in multiple global sectors.
Assign material authority, sourcing, slitting, coil identity, certificate, incoming acceptance and change responsibilities before a stamping quote.
Aug, 20, 2026
Review a project-scoped internal cycle test for an AI-server return spring: five samples, 10 mm stroke, 10 cycles per minute, 10,000 cycles and limits.
Aug, 18, 2026
Normalize scope, tooling, inspection, packaging, delivery and change assumptions before comparing custom-parts supplier quotations.
Aug, 17, 2026
Compare coil width, feed pitch, nesting, carriers, stations, scrap basis and material-utilization assumptions before approving a stamping quote.
Aug, 16, 2026Start your customized service
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