1.Where is your factory located?
We are a raw materials manufacturer for dietary supplements and our factory is located in Hefei & Jiangxi. Welcome to visit our factory!

2.How many years in business?
Collagensei has been established for more than four years. We export to over 20 countries.

3.Do you provide samples? ls it free of charge?
Yes, free sample is available,but customers are required to pay for the shipping costs.

4.What is the packaging for your products?What is your MOQ?
Our packaging are 20KG/Bag,20KG/Carton,25KG/Drum.Packaging can also be customized.Our MOQ is 20kg.

5.What is your payment terms?
Most of the payment methods are T/T, L/C.We offer credit terms to our regular customers.

6.What is the delivery time?
The United States: You can pick up in our CA warehouse. Other Countries: The lead time depends on the order size and the customization degree of the order. The shipping time is 4-8 days by air or 15-30 days by sea.

7.Do you test all your goods before delivery?
Yes, our products are 100% tested before delivery. Each batch of products has a corresponding COA(certificates of analysis)

8.How do you treat quality complaint?
First of all, our quality control will reduce the quality problem to near zero. If any problem happens (Damaged goods, shortage of goods, bad quality) after sale, we accept changing or refunding service.

9.Are the sources and manufacturing processes of your products reliable, with relevant quality assurance and certifications?
Yes, Collagensei has its own raw material base. 100,000-level dust-free production workshop, with ISO, HALAL, KOSHER and other related certificates.