Hi Sara wu
Sorry for reply late.
1. Tomorrow morning i will go to FDA to send all of our document. now i have MSDS, COS,(Arbutin, Snail) and certificate MFG. Tomorrow I will ask them for check your document. If everything ok i guess that will be recieve registered number from FDA next 2 weeks on the other hands if your document don't pass to check i will tell you quick for prepare to send the next step