In order to optimize the time and communication, now I have an assistant that will take care of sending you the tracking numbers and SKUs and codes for what is what. Basic tasks.
She will be using my emails to send you that.
You can also get the SKU list for domestic order by email, I can give you the whole list so that you never contact me again about what is what
for domestic orders only
Just send an email with title : "SKU list"
to:
sigma@sigmachemical.com.cn
For international orders, we will always have to give you the codes once you receive your orders.