Root Cause:
1.Scratches: Products were not well-protected during the manual operation process, resulted in the collision between products. Also the packaging and shipment process would cause the scratches.
2. Gas marks: During plastic injection molding process, the gas didn’t discharge completely, leaving the gas marks on product surface.
3. Gate marks: The blades used to cut off the gate was thin. And the lower enclosures were not fixed during cutting process, causing uneven at the gate location.
4. The gap between upper and lower enclosures: products were not completely assembled, and the warping deformation of upper and lower enclosures were slightly different since the upper enclosures were molded with silicone rubber while the lower enclosures were not.