As I know, ebiochem.com is a good B2B website, They have many kinds of herb materials as well as lots of chemicals. I have bought 3 kg of chlorogenic acid last year.http://www.ebiochem.com/product/eucommia-ulmoides-p-e-chlorogenic-acid-80201
It's quite well. They also sent me Christmas Card.
BTW, Pueraria is not very effective to be honest.
It's quite well. They also sent me Christmas Card.

BTW, Pueraria is not very effective to be honest.