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. Our client had been looking for the solution to it but the prior injection companies failed to reach the satisfactory effect.
However, SAMBO’s expert team made it. We studied carefully on the characteristics of plastic resins and acquired in-depth knowledge about the relationship between temperature and the resins performance. Based on that, we worked together with our suppliers to set parameters of injection machines for hundreds and thousands of times.
Finally our hard work paid off. We found out the equilibrium point to make the pure white doorbells with the exact wanted effect, without influencing the plastic appearance and performance.