而这些附加服务的使用期大多为6个月，当使用期结束后，HKBN便会联络顾

而这些附加服务的使用期大多为6个月，当使用期结束后，HKBN便会联络顾客，了解顾客的使用状况，说服顾客继续使用这些服务，从而达到二次销售的目的。

結果 (英文) 1:

Most of these additional services used for 6 months, when after the end of the period and HKBN will contact customers to understand customer usage and persuade customers to continue to use these services, so as to achieve the purpose of resale.

結果 (英文) 2:

The use of these additional services mostly for six months after the end of life, HKBN will contact the customer to understand the usage customers, to persuade customers to continue to use these services, so as to achieve the purpose of secondary sales.

結果 (英文) 3:

These additional services use period is 6 months, when used after the end of the period, HKBN will contact the customer, understand the customer's usage, to persuade customers to continue to use these services, so as to achieve the purpose of sales two.