Dear [Factory Name],
We have recently received multiple complaints from our partners regarding the quality of packaging for our products, specifically concerning blisters that do not match the size of the backing card, as well as sticking out flanges. These issues have led to some products being deemed unsellable upon arrival to the stores. We kindly request that you consider our suggestions and pay as much attention to the quality of packaging as you do to the toy itself, ensuring that we maintain our brand reputation and customer satisfaction.
Thank you for your attention to this matter.
Best regards,
[Your Name]