Introduction:

Estriol (E3), also spelled oestriol, is a steroid, a weak estrogen, and a minor female sex hormone. It is one of three major endogenous estrogens, the others being estradiol and estrone. Levels of estriol in women who are not pregnant are almost undetectable. During PREGNANCY, a large amount of estriol is produced by the PLACENTA. Isomers with inversion of the hydroxyl group or groups are called epiestriol.

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Q1: Are you a manufacturer?
A: Yes, We manufacture bulk products in our factory located in Jiayu, Hubei, and produce small quantity and customer synthesis products in our lab located in Wuhan.

Q2: Do you have stock?
A: We understand most customers prefer stock, so we'll try to keep stock for most products. However, for some rare products, we won't keep stock and it needs time to synthesize.

Q3: What certificates and documents do you offer?
A: Some technical paperwork is available, such as COA, HNMR, HPLC, LC-MS etc.

Q4: Why should I choose you?
A: Powerful technical support-come from our highly skilled & fully experienced staff, working in chemical industry for over 5 years, in average.Strict quality control-comes form our sophisticated management system.
Professional and warm sales team-since we believe we can only win via our hard work in a competitive world
Quick response and excellent presale and after sale service-since we believe our customers deserve all the best service.

Q5: Can I get best price from you?
A: Of course. We don't chase excessive profits and always try tp give best offer. If you are good at bargaining, you can also enjoy fun of bargaining. Just don't make it too hard!

Q6: How should I pay?
A: We accept all kinds of payment ways. such as Paypal, T/T, West union, MoneyGram.