1. Why I can't track the tracking no Mnstar gave to me? 
All sample packages by DHL, UPS, FedEx and TNT are sent from Shenzhen to Hong Kong, then dispatch to different flights, it will take 1-2 days. Please contact Mnstar if tracking No doesn’t show up online after 3 days. 

2. The tracking No does show on website, but no further step for few days.

Following are the possible reason:

Parcel is on the flight, on the way to your country, please check one day later.
Parcel is held by Customs, need documents or clearance, please contact Customs to see what happen.
Parcel Lost, please contact Mnstar.

3. Why EMS takes so long time?

EMS suits for parcel with big size and light, it does delay in business rush months like Oct, Nov, Sep etc. 

If customer needs a speed delivery, it is better not choose EMS.

All the products with small size are sent by DHL, UPS, FedEx, TNT