high quality and hot selling Melatonine CAS NO.73-31-4

Zhengzhou Qiangpeptide Cross Border E-commerce Co., Ltd.specializes in exporting high quality Pharmaceutical raw materials, plant extract, pesticide raw materials  and Chemical raw materials.
Our products are produced on the basis of best technical team, advanced equipment, high qualified management which meet the requirements of security and environmental protection. We earned customer trust and created a good reputation during these years.

Q1: May I get one sample before placing order
Re: Yes, samples are available. For normal products, samples are for free and you just need to bear the freight; For those high value products, you just need to freight and certain product cost. When we both cooperate for some times or when you are our VIP customer, free sample will be offered when you need.

Q2: Which payment is available for your company
Re: T/T, ,Bitcoin etc. You can choose the one which is convenient for you.

Q3: How and when can I get my goods after payment
Re: For small quantity products, they will be delivered to you by international courier(DHL, FedEx, TNT etc.) or by air. Usually it will cost 3-10days that you can get the goods after delivery.For large quantity products, shipping by see is worthwhile.It will cost 15 to 30 days to come to your destination port, which depends on where the port is.

Q4: Is there any possible to use my appointed label or package
Re: Yes. If needed, we'd like to use label or package according to your requirement.

Q5: How can you guarantee the goods you offer is qualified
Re: We always believe honesty and responsibility are basis of one company, so whatever products we provide for you all are qualified. We will have goods tested and provide COA before delivery for sure.