2-Acetylbutyrolactone(CAS 517-23-7) we call it ABL for short, also can be called α-Acetylbutyrolactone, is an important intermediate involved in the synthesis of chemical and pharmaceutical products.
Magnesium sulfate heptahydrate is also named mgso4.7h20, used in fertilizer,FOB price is 120usd per ton, quality is better, diameter have 1-2mm, 2-3mm .