L-TRYPTOPHAN 99.0% White to off-white crystalline powder

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About us:

Zhejiang Yuanjin Chemical Co., is a wholly-owned subsidiary of Jingxin Holding Group Co., Ltd., established in 2014. The company has an excellent team of R&D and sales professionals. With the strong manufacturing and R&D capabilities of Jingxin Holding Group, specializing in pesticide intermediates, pharmaceutical intermediates, and online testing equipment. R&D and production, our vision is to become a leader in green agrochemical and medical chemical intermediates.

FAQ

1. Do you accept sample order?
We accept sample orders. We will make samples before bulk production, and after sample approved, we'll start to bulk production.

2. How to confirm the quality before placing the order
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.

3. What’s the MOQ?

Our MOQ is 50g-1000g. But usually we accept less quantity such as 50g on the condition that sample charge is 100% paid.

4. Do you provide COA?
Yes. We'll provide certificate of analysis before shipment