最近好吗?
How are you doing recently?
我想您最近应该很忙吧?不好意思打扰您.
I guess you are quite busy these days and sorry to disturb you.
如果您有空,可以把图纸发给我们.
You could send us the drawings if you are available.
真诚为您服务.
Sincerely provide the service to you.
等待您的回复并致以美好的祝福.
Look forward to your reply and with Best Regards