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参考译文： Please check with your development team whether the the pigments or PC materials have caused the shell easy to crack.

I have discussed ... issue with factory today.In terms of Factory will make a sun test for shell.Cut one shell into four pieces.get them in the Sun separately for two days,four days and seven days.According to that ,examine the degree of its fade.If it fades badly, then its necessary to discuss with PD whether to adjust materials. I have asked factory to exam new colors to confirm if it is qualified At the same time,factory will offer examined report to us.