professional factory for Faucet WF-P1654 in Iraq
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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 as below:
This demonstration uses a large drain pipe that creates standing waves in the tube [with two open ends] as it is spun about. Tones are created when the tube is spun at certain speeds (corresponding to certain wavelengths) other speeds create no tone or octave steps up or down. This trial is being done by one of my students because I like to them the opportunity to get involved (plus I was really dizzy at this point from having just done the demo myself).