Regarding Song Weirui’s methanol engineering issues
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Methanol engineering was developed early by Song Weirui, so it was difficult to obtain at first. This book is a classic; nothing has surpassed it to date. I suggest that everyone divide the work and upload a Word version of it.
There are no versions without a world element; most of them are in PDF format, and they can be downloaded from forums
Isn’t the same with PDFs? Let’s see if there’s anything special; usually people look at works by Feng Yuanqi and others