Frequently Ask Questions

Yes, we could offer free samples for the test with shipping freight collection. The sample will be shipped out with your delivery address provided.

First please send us an inquiry by telling us your use and quantity and the desired effect to get by adding the additives. Then we will soon reply and advise perfect additives for you. And the free sample will be shipped out with your confirmation. Once get the effective test result, prices could be negotiated for big orders. Delivery time 7-15 working days for bulk order once payment is received.

Yes, we have a professional engineer team to work for you.

For small quantity products, they will be delivered to you by international courier(DHL, FedEx, TNT, etc.) or by air. Usually, it will cost 3-5days that you can get the goods after delivery. For large quantity products, shipping by sea is worthwhile. It will cost days to weeks to come to your destination port, which depends on where the port is.

We always believe honesty and responsibility are the 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.

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Have a Quest?

If you don’t find the answer above, feel free to contact us.


Add: Room 2311, Building 47, No. 101, Shenzhen Road, Laoshan District, Qingdao City, Shandong Province. 266000

WhatsApp: +86 187 5327 2046

Email: sales@qingdaopengfeng.com

We guarantee we will reply you within 12 hours.

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