On the question of quantity: A bundle of 50, due to machine points, there will be a time difference when the manual takes, less than a second earlier, more than a second later, but most of them are 50, do not rule out the possibility that there are 52 53 or 48 47 (please contact customer service for a small number) for demanding each bundle is 50. Do not allow zero error, please be careful! Explain clearly to avoid follow-up trouble, I hope you understand!