VOLSEN always focused on the production, R & D and sales business of hor-mone APIs and intermediates. we are the first manufacture who develops some high degree of difficulty synthesis products in China, such as Methylprednisolone Series,Dehydroepiandrosterone Series,Testosterone Series,Steroid Series and so on.
What is more, We have a strong logistics team, they found many different safe-delivery way for the clients from different countries. Our clients can always receive the package around 7days after payment.
Welcome new and old customers from all walks of life to contact us for future business relationships and achieving mutual success!