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.
Review square washer hole location separately from hole size. Define locating references, corner clearance and measurement conditions before approving samples.
Nov, 03, 2026
Separate sleeve bore size, form and datum-related seating checks. Agree the holding setup, finished condition and evidence before sample approval.
Nov, 03, 2026
Separate shoulder location, datum-related checks and end-thread acceptance before releasing a stepped-shaft drawing. Define the setup and final inspection state.
Oct, 31, 2026
Define free and installed spring contact positions, then separate dimensional, force and electrical acceptance evidence before approving samples.
Oct, 30, 2026Start your customized service
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