Review custom spring projects by controlled drawing, operating points, preload, travel, material authority, validation evidence, quantity and delivery scope.
Made-to-drawing threaded-part and special-fastener review covering thread definition, material, finish, inspection and controlled release inputs.
Zhengna Technology provides welding and fabrication services with cutting, bending, MIG/TIG welding, finishing, assembly and inspection support.
Review custom aluminium extrusion profile requirements covering drawings, material, geometry, finish, secondary processing, inspection, packaging and quotation inputs.
Zhengna Technology provides custom assembly services for metal and plastic components with fastening, inspection, packaging, and shipment support.
Zhengna Technology supports sanitary hardware parts with corrosion-resistant materials, finishing, forming, machining, assembly, and inspection.
Zhengna Technology makes automotive components with stamping, machining, injection molding, tooling, IATF-oriented control, and inspection support.
Zhengna Technology supports precision electronic components with stamping, machining, finishing, miniaturized features, and inspection control.
Zhengna Technology supports high-precision machined components with CNC milling, turning, complex geometry review, finishing, and inspection.
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