The answer to your question;
1. That right, I've sent the Brass scrap of invoice IT-20140311M on scrap Lot#32 Q'ty = 22 Bags (Scrap Bag No. 1-22)
and remaining (Scrap Bag No. 23-34) I'll send on Lot#39.
2. I've send Material stock and using data as your requested per attached file.
3. For Product NG. (Rusty) that mean the product rejected from customer because they found the little rusty but can't be seen with the eye.
So, The percentage of scrap is more than usual such as normally