Hi. Although I live in Brazil now, I´m an American editor and proofreader, a native English speaker with excellent writing skills and years of experience correcting texts for authors whose second language is English. I use Track Changes to show all my corrections and comments in your texts, and offer suggestions for improving what has been written when needed. Below, please find my alterations in your sample text. I´m curious to know if what you want when you say "proofreading" is also meant to be "rewriting" to avoid plagiarism, or if you really just want the corrected texts to be in perfect English - please clarify. Thanks, David
Passpay is committed to creating the most valuable channel for new media. Relying on its own strengths and core technology, the company reached a close cooperation with a number of strategic partners such as Unionpay, Alipay, and PICC. Passpay has installed 200,000 intelligence-oriented media machines in many busy high-end locations, such as airports, bus terminals and large-scale scenic spots, to achieve resource sharing and win-win cooperation.
Moreover, an ultura-high-speed wireless communication system called EUHT has been included in those media machines. The key national patent for this technology has been undergoing research and development for 6 years, and has passed both the RIOH outfield test and the CRSC test.