Located in Shangguan Village, Fuyang District, Hangzhou, our 12,000 m² manufacturing facility (Hangzhou Bailian Trading Co., Ltd.) operates an in-house destructive and non-destructive testing laboratory auditing every production batch across 9 mechanical benchmarks:
| Laboratory Test Equipment | Loading Protocol | Factory Acceptance Threshold | Structural Engineering Purpose |
|---|---|---|---|
| جهاز اختبار إجهاد المضرب | 50,000 continuous alternating load cycles | Zero micro-cracks / stiffness loss <3% | Shaft, T-joint & throat long-term structural endurance |
| جهاز اختبار التواء المضرب | Rated static torsional load across shaft-handle axis | Torsional deviation <1.5° (Full Carbon) | Off-center impact directional stability & face recovery |
| آلة اختبار المواد الشاملة | Tensile modulus & interlaminar shear verification | 24T (240 GPa) / 30T (295 GPa) / 40T (380 GPa) | Incoming Toray carbon prepreg & alloy batch COA audit |
| جهاز اختبار الصدم بالثقل الساقط | Calibrated drop-weight impact on frame 12/3/9 o’clock | Zero structural fracture or delamination | Clash durability & Padel glass-wall impact survival |
| جهاز اختبار الصدم بالمقذوفات | High-velocity pneumatic projectile impact cycling | 500+ high-speed impacts without core/grommet failure | 35 LBS badminton stringbed & Padel 3K/12K/18K face integrity |
| جهاز اختبار الاهتزاز ثلاثي المحاور | Triaxial (X/Y/Z) frequency damping & decay logging | Residual vibration decay ≤120 ms | Handle damping & Padel EVA core (13°–17°) shock absorption |
| جهاز اختبار ارتداد المضرب | Sweet-spot coefficient of restitution (COR) rebound check | Batch COR variance ≤±1.5% | Consistent repulsion speed across production lots |
| جهاز اختبار التواء الإطار | Bilateral frame torque loading at 2/4/8/10 o’clock | Left/right angular symmetry ≤0.2° | Verifies uniform 160°C bladder compaction & wall thickness |
| جهاز قياس وزن التأرجح | Dynamic MOI swing-weight + static weight/balance sorting | Weight ±1.5g · Balance ±2.0mm · MOI ±1.5 kg·cm² | 100% individual digital grading prior to AQL packing |
| Manufacturing Cell | Industrial Equipment | Multi-Sport Production Scope | In-Line Quality Gate |
|---|---|---|---|
| 1. Cold-Storage Prepreg & CNC Slitting Cell | -18°C climate-controlled freezer + automated laser ply cutters | Toray 24T/30T/40T unidirectional & 3K/12K/18K woven carbon plies cut at 0°/±30°/±45°/90° | Ply accuracy ±0.1mm; zero resin pre-curing |
| 2. 160°C Pneumatic Hot-Press Bladder Molding | Multi-cavity 15-Bar pneumatic hot presses + internal solid foaming rigs | Full-carbon & composite frames for Badminton (15 SKUs), Tennis (4 SKUs) & Squash (6 SKUs) | 160°C thermal cure; zero-void compaction |
| 3. Padel 38mm Composite & EVA Core Molding Line | CNC EVA core profiling routers + vacuum compression molding presses | 14 Padel racket OEM models in 3K/12K/18K carbon & composite faces with 13°–17° EVA cores | Profile 38±0.2mm; EVA ±1.5° Shore C |
| 4. Multi-Axis Robotic CNC Drilling & Finishing | 5-axis computerized CNC drilling rigs + dust-extraction wet sanding | Precision string-hole perforation (72/76 holes, 16×19, 14×18) & Padel face hole arrays | Hole pitch ±0.02mm; chamfered anti-shear edges |
| 5. Cleanroom Electrostatic Paint & Decal Curing | Class-10,000 dust-free spray booths + 80°C waterslide decal curing ovens | Matte, gloss, satin, chameleon, exposed carbon & 3D quartz sand spin textures | ASTM D3359 5B paint adhesion; PMS ΔE ≤1.0 |
| 6. Digital Balancing, CNC Stringing & AQL Packing | 0.1g electronic scales + digital balance beams + constant-pull stringers | 100% unit sorting, laser cone engraving & 50-set moisture-barrier master carton packing | ISO 2859-1 (AQL 1.5 Major / 2.5 Minor) |