| Customization: | Available |
|---|---|
| CAS No.: | 275-187-7 |
| Formula: | He |
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| Atomic number | 2 |
|---|---|
| Atomic weight | 4.002602 |
| Melting point | none |
| Boiling point | −268.9 °C (−452 °F) |
| Density (1 atm, 0 °C) | 0.1785 gram/litre |
| Oxidation state | 0 |
| Electron configuration | 1s2 |
| Item | Purity % | |||
| Helium(He) | 99.995 | 99.999 | 99.9999 | |
| Impurities(ppm) | Oxygen(O2) | ≤2 | ≤1 | ≤0.5 |
| Moisture (H2O) | ≤10 | ≤1 | ≤0.2 | |
| THC | ≤3 | ≤0.5 | ≤0.2 | |
| Carbon Monoxide(CO) | ≤1 | ≤1 | ≤0.1 | |
| Carbon Dioxide(CO2) | ≤1 | ≤1 | ≤0.1 | |
| Argon(Ar) | ≤2 | ≤1 | ≤0.5 | |
| Nitrogen(N2) | ≤10 | ≤5 | ≤0.5 | |
| Hydrogen(H2) | ≤3 | ≤1 | - | |
| Neon(Ne) | ≤15 | ≤4 | - | |
Chengdu Henbin Refrigeration Technology Co., Ltd. is a large modern chemical enterprise specializing in manufacturing, researching, and exporting high purity fluoro-chemicals, fine chemicals, hydrocarbon chemicals, etc. Its headquarter locates in Sichuan capital Chengdu city, and has two profound manufacturing bases, separately in the Qingdao City of Shandong Province and Jinhua city of Zhejiang Province. Our company takes "Science and Technology, Environmental Protection, Internationalization" as a development direction and "First-class Technology, First-class Quality, First-class Service, First-class Efficiency" as a service tenet.
Q: If there's space for you to lower the price?
A: The price in that field is changeable, so, feel free to ask for the latest price and I'll provide you the lowest.
Q: Could I use my own LOGO or design on goods?
A: Customized logo and design on mass production are available.
Q: Can I visit your factory?
A: Sure, welcome any time. We can also pick you up at the airport and station.
Q: What is the delivery time?
A: One week for sample, 15 to 20 days for mass production.
Q: How about the payment term?
A: TT, L/C at sight, Paypal, Western Union, etc. Normally 30% T/T in advance, 30% TT before shipment, the balance against the copy of B/L in 7 days.
Q: How much discount can you offer?
A: We will do our best to offer a competitive price, usually the discount depends on the quantity.
Q: The shipping fare costs too much, can you make it cheaper for us?
A: We will try our best to negotiate with the shipping company, we save every penny for our customers, if it is possible, you can designate your own shipping agency.
Q: Can I trust you?
A: Absolutely YES. We are a "made in china" verified supplier.
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