The anemoscope needed to be molded into a white panel made from anti-UV materials, without aging or changing color for 5 years. The central zone of the solar panel cover shall be transparent to ensure a higher light conversion rate while the PCB in the corners need to be covered to ensure aesthetics.
The subject plastic part is a white doorbell made from V0 fire retardant ABS.
But in the injection process, as every expert knows, the plastic part turned yellow at a higher temperature and malfunctioned at a lower temperature. Yet SAMBO solved the problem and made the doorbell in perfect pure white.