Умный датчик ST8306 детектор качества воздуха в помещении дымки PM2 5 портативные товары

We provide 30 days warranty counting from the arrival date of the item.

If the parts you purchased from us are not of perfected quality or they don't work, please simply return them to us for replacement or refund.

If the part is defective, please notify us within 3 days after arrival.

Any parts must be returned in their original condition to qualify for a refund or replacement.

Q: Are you trading company or manufacturer ?
A: We are UNI-T Original factory.

Q: How long is your delivery time?
A: Generally it is 3-5 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below:

Q: Are you trading company or manufacturer ?
A: We are factory.

Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us