Flawless materials are the foundation for ensuring the high quality of the final product. This step focuses on checking whether the various raw materials are free of defects, ensuring they can be used in production without hesitation. The inspection includes carbon fiber prepregs, fiberglass mats, resins, molds, EPS cores, metal inserts, threaded inserts, headset bearings, screw fittings, inlays, frame components, and packaging materials (protectors, decorative, and protective films).

To ensure error-free production, every lamination step is thoroughly detailed in the layup plan with both text and images. For easier tracking, each frame is assigned a unique QR code.

At this step, quality assurance defines the curing parameters. These include mold contact pressure, internal pressure, the temperature profile, and curing time.

This step ensures that the molds and tools used for frame components are not mixed up. A visual inspection of the frame blank is conducted, with special attention to the following: resin buildup (lack of fiber), wrinkling, delamination, contamination, dents, holes, cracks, damage from demolding, and the condition of the mold. To detect even the slightest production defects, testing is also performed in a water tank. The air-filled frame blank is submerged, and any bubbles that emerge reveal poorly bonded areas between carbon layers, which could compromise structural integrity, leading to rejection of the part.

At this step, CNC machines are used to process various frame components. Each machining step is precisely detailed, listing the CAM programs to be used, along with the specifications for milling tools and coolant to ensure high product quality. After each machining step, measuring tools and test gauges are used to inspect the machined surfaces, ensuring that all dimensions and interfaces meet the required standards.

The jigs, adhesives, as well as the bonding temperature and time for gluing frame components are all specified. Every step is thoroughly documented to ensure that all processing requirements are met accurately.

Once all the dimensions of the frame blank have been adjusted, the surface is sanded. During this process, the surface finish is continuously checked by visual inspection. The frame only meets the required standards once all burrs are removed and all surfaces are smooth.

Before painting the frame blank, we perform another visual inspection. We pay special attention to any color variations in the visible carbon fiber and fabric defects, ensuring the surfaces are smooth. We look for holes caused by missing material, scratches, dents, drips, and bubbles. We also check all edges to make sure they match the design intent and that no areas have been overly smoothed due to excessive sanding.

To ensure quality, the cleaners, primers, colors, and masking films used during the painting process are precisely calculated. Colors and artwork are carefully planned, and after each intermediate step, another visual inspection is performed to ensure everything meets the required standards.

After painting, labeling takes place. All decals have specific guidelines, including size, position, color, and material. During application, a visual inspection is conducted to check the number, type, and placement of the stickers. If everything is correct, the final layer of paint is applied (matte or gloss finish).

Once all painting and decal are complete, a final visual inspection is carried out to ensure there is no paint damage, defects, fading, unwanted matte or gloss effects, orange peel texture, drips, bubbles, scratches, dents, or misalignment and incompleteness in patterns and decorations. Additionally, the surface thickness, impurities (particle density), hardness, and durability (through a drop-ball test) are checked.