Melatonin CAS NO.73-31-4 CAS NO.73-31-4

In stock:  Top-sell products are always in stock.
High Purity: More than 99%

Strong research team
Quality :High quality
Packing method: bagged, boxed, bottled,barreled (customer needs packing methods)
Customer Service: If you need us to provide samples, please contact us in time, we will choose the mode of transportation you want, and deliver the samples to you as soon as possible.
Contact way : Whatsapp/Wechat/Email/Phone, please choose the way you like.We will be in response asap.
modes of transport : We will choose the best mode of transportation according to the actual situation of the customer to ensure the fastest delivery speed.

Rich experience
We are a professional pharmaceutical chemical raw material manufacturer. We have been focusing on this field for many years, and our products meet BP/USP/EP/ corporate standards. We guarantee all purity > 99%. High purity and quality is one of the greatest secrets of our success. 
 

Shengzhikai Biotechnology Co., Ltd. is a high-tech enterprise dedicated to the fields of fine chemical products.  
The scope of products covers pharmaceutical intermediates, plant extracts, chemical reagent, animal pharmaceutical,  agrochemical intermediates, antibiotic and so on.
Our company have own import and export right. Our clients spread all  over the world.
Based on the advantage of trade and manufacture, we strictly control the whole trade process, providing  customers with all-round services such as R&D, quality control, logistics and so on.
We firmly believe that quality is  the life of our company and customer's success is our success. Reliable quality and excellent service is our permanent  commitment .
We wish to establish a long term mutual beneficial relationship with more friends in the future and give  our customers the best products and services that they expect and deserve.

Factory & laboratory

Package

Our customers

Transport

Payment method

FAQ

Q1 Can i get some samples

A1 Yes, we can supply the free sample, but the shipping cost be paid by our customers.

Q2 How to start orders or make payments

A2 Proforma invoice will be sent first after confirmation of order, enclosed our bank information.
Payment by T/T, or Paypal or Escrow(Alibaba).

Q3 How to confirm the Product Quality before placing orders

A3 You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

Q4 What's your MOQ

A4 Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Q5 How about delivery leadtime

A5 Delivery lead time: About 1-3days after payment confirmed. (Chinese holiday not included)

Q6 Is there a discount

A6 Different quantity has different discount.

Q7 How do you treat quality complaint

A7 First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.

GUARANTEE QUALITY OF EACH PRODUCT !