What the company make a phone call to China factories, is mainly for knowing that if they can keep the production progress up. So, we have to find the person in charge, ask him and get his formal reply within a short time. After we send email to them, we make a phone call immediately to them to make sure they receive the email message.
更新1:
Then, we have ask them what the exact time they can reply by email, except "asap". By this way, we can find and solve the production problem within a short time so that we can arrange the shipment on time but not delayed.
更新2:
note: please re-write the passage in a properly manner, 可改字眼但要保意思,最要緊係grammar唔好亂撞!!!