What do apo and fpo mean? APO(Alternative Public Offering) is the abbreviation of Alternative Public Offering, which means that an overseas special purpose company completes a reverse takeover transaction (shell listing) with an American OTCBB market shell company, and at the same time, it can raise funds from international investors. In this indirect way, private companies finally sell their shares to public investors in the stock market.
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As a brand-new business model, APO can achieve better valuation, and the financing cycle is short, eliminating the biggest risk involved in the listing process. For American institutional investment, APO is also a good way to invest in China companies.
In the commercial field
APO is a new and complex financial transaction model that was born and matured in the United States in recent years. It aims at the potential business opportunities between the US capital market and the financing needs of private enterprises in China, and creatively connects the private equity financing and reverse takeover business of the two capital markets seamlessly. It is to complete the reverse acquisition transaction with the American OTCBB market shell company while the overseas special purpose company raises funds from international investors. In this indirect way, private companies finally sell their shares to public investors in the stock market. At present, Water Financial Group of the United States has registered APO as a service trademark.
Translated into Chinese, APO means financing reverse takeover. Financing reverse takeover is a financing procedure between IPO and private placement, which has the characteristics of both private placement and IPO. Private placement is characterized by low cost and high speed, and it only takes three to four months to complete financing. APO also has the characteristics of public offering. The shares acquired by investors at the same time of investment are the shares of listed companies. It is precisely because investors get liquid bargaining shares at the moment of investment that they can bear higher prices.
Telescope field of view
Is the abbreviation of Apochromatic in English, which means? Colorless? . Apochromatic lens refers to a lens that can eliminate chromatic aberration of multiple colors (more than two). Used for manufacturing precision optical instruments, such as telescopes. Fluorite lens, AD glass, UD glass and ED glass are mostly used as materials.
APO apochromatic method uses three or more lenses to design the light energy of three colors to converge at the same point. Two lenses can't achieve the purpose of APO design. Achromatic super APO is designed so that four colors of light converge at the same point. Semi-APO is based on common achromatic convergence, which uses special low dispersion optical materials, such as artificial fluorite or ED glass, to reduce the dispersion of other colors.
Highest grade
Most of this level of APO mirrors are composed of more than three advanced APOs. For this kind of mirror manufacturers, they usually invest in advanced materials, especially in the field of eccentric photography, and there are many treatments for optical correction.
From the visual point of view, this kind of mirror can not only see the color difference inside the focus, but also have extremely weak dispersion outside the focus.
Among the top refractor manufacturers in the world, the representative types of such mirrors are Gao Qiao FSQ-/KOOC-0/06ED, Pentax/KOOC-0/25SD F (4 pieces of Pitzval glass structure) and APM-TMB/KOOC-0/30//KOOC-0/200 (super planetary telescope). Astrophysics 130/800, 130/ 1040, TEC 140/980, carl zeiss APQ 100/ 1000, etc.