2014年8月9日 — In high pressure gas and in the liquid phase, oxygen is coloured blue and this cannot be due to these transitions as they are too long a...
Gaseous oxygen is colorless because the visible range of light is reflected by gaseous oxygen. It doesn't absorb any of it, so we can see straight through it.
White for hydrogen · Black for carbon · Blue for nitrogen · Red for oxygen · Deep yellow for sulfur · Purple for phosphorus · Light, medium, medium dark, and dark...
we were very satisfied, got to know your company better, and found that you always adhere to the corporate philosophy of good faith, and we appreciate this attitude.
This company continuously trains its employees, accumulates product production experience, continuously carries out technological innovation, and can really provide customers with excellent products.
Your company has always enjoyed a good reputation in the industry, and you have always taken "integrity" and "pragmatism" as your core culture, and the quality of your products is very good.
Choosing a good supplier is a tedious and difficult thing. Since we attach great importance to service and quality, we are extra careful when making choices, and after learning about this company in.