有勞各位幫我把以下的句子「中文」翻譯成「英文」，謝謝！

計算業績單位
設立一個告示板
定期電郵資訊給客戶
提供有關的優惠

Calculation of performance units
The establishment of a notice board
Regular e-mail information to customers
Provide the concessions

The computation achievement unit sets up a bulletin board regular email information to provide the related preferential benefit to the customer