Min. Order Reference FOB Price
100000 Pieces US$0.03-0.45 / Piece
Product Description
specifications caliber(mm) length(mm) 12*60 12 60 12*75 13 75 13*75 15 75 13*100 13 100 15*100 15 100 (1) Take liquid or solid reagents. (2) Heat a small amount of solid or liquid. (3) Prepare a small amount of gas reactor. (4) Collect a small amount of gas (5) Dissolve a small ...