Qingdao Sigma Chemical Co., Ltd (International, US, EU, Canada and Australia domestic

Something that I do that may be helpful to someone. I have made 2 orders 1 domestic and 1 international. Both have multiple items. I waited about a Day after I sent payment this time but sometimes I wait a couple days. But what I do is send a message asking for all the identification id's and numbers for all the items in my current orders. Message with all that info is usually sent back within 24 hrs. This time a couple of hours. I read on here all the time where people are needing to know what is what after they already received their package and sometime have rip all the markings off. And no way to tell. I might not get any of my packages for a week or 3 but when I do. I'll know what's what!!
 
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