✔ 最佳答案
Dear clients,
Thank you very much for your patronage!! Due to the ever-increasing cost of transporation, we are very sorry to inform you that with effect from <date>, we have to adjust our charge by xxx% increase in order to maintain our usual high quality service. Starting from <date>, the minimum ordered quantity per single transaction is 20,000. This is really a difficult decision to make but we have no other option. Hope that we can be of service to you continuously!!
For any query, please feel free to contact us at <telephone number> or <email address>.
Yours faithfully,
xxxxx
<Company name>