Style design:

• Classic style (basic hairpin), fashionable style (pearl/metal decoration), functional style (oversized/mini size).
• 3D modeling assisted design to ensure structural rationality (such as spring strength, tooth density).

Material selection:

• Environmentally friendly ABS plastic, stainless steel spring, matte/glossy surface treatment.
• Special needs: anti-allergic coating, degradable materials (for the EU market).

Technical drawings:

• Provide three-view drawings and dimension tolerance markings (±0.1mm precision requirement).
• Spring mechanical test parameters (opening and closing times ≥5000 times without deformation).

Functional test:

• Clamping force test (simulating different hair volumes).
• Surface treatment test (salt spray test, wear resistance).

User feedback:

• Try on a small area, adjust the curvature of the teeth and other details.

Injection molding process:

• Raw material drying (anti-bubble), precise masterbatch ratio.
• Fully automatic robot picks up parts to reduce manual pollution.

Assembly process:

• Spring pre-compression assembly, ultrasonic welding fixation.
• Manual quality inspection (remove burrs/scratches).

Packaging design:

• Card-hangable blister packaging (suitable for supermarket display), customized LOGO printing.

Logistics optimization

• Container loading solution (40HQ for 200,000 pieces, anti-squeeze packaging).
• Cooperated freight forwarder: DHL small batch trial order, large cargo LCL by sea.

After-sales support

• Provide OEM/ODM service, customized brand packaging.