Siwei Company offers Amino Acid and Pharmaceutical Raw Material , always assuring your customers highest quality demands.

We are a manufacturer specializing in the producing and export of
Amino Acid List:
L-Cysteine Hydrochloride Monohydrate CAS No.: 7048-04-6
L-Cysteine HCL Anhydrous CAS No.: 52-89-1
L-Penylalanine CAS No.: 63-91-2
L-Arginine HCL CAS No.: 1119-34-2
L-Lysine HCL CAS No.: 657-27-2
L-Leucine CAS No.: 61-90-5
L-Arginine Base CAS No.: 74-79-3
L-Valine CAS No.: 72-18-4
L-Tyrosine CAS No.: 60-18-4
L-Glutamic Acid CAS No.: 56-86-0

Pharma Raw Material List:
Acyclovir CAS No.: 59277-89-3
Ribavirin CAS No.: 36791-04-5
Glucono-Delta-Lactone CAS No.: 90-80-2
Cromolyn Sodium CAS No.: 15826-37-6

We are looking forward to your reply.

Best regards
Mark
Sales Manager

Siwei Development Group Ltd.