Quality

1. High quality and competitive price.

2. All purity> 99%.

3. We are a manufacturer and can provide high-quality products at ex-factory prices.

Fast and safe delivery.

Delivery

1. The package will be sent out within 24 hours of receiving the remittance.

2. Safe and prudent transportation method for you to choose.

3. Customs pass rate> 99%.

Service

1. Professional service and rich experience make customers feel at ease, sufficient inventory and fast delivery meet their needs.

6. Can provide NMR, HPLC and COA

5. Welcome to order samples.

After-sales

1. Communicate face to face via phone/WeChat/whatsapp/skype. We are experts and your friends!

2. Market feedback and product feedback will be greatly appreciated. It is our responsibility to meet customer requirements.

3. Doublewin company exports the goods to many countries and regions at reasonable prices. If you are interested, please do not hesitate to send us an inquiry!