A beginner seeking information on valves and pipelines
Thread Content
This post was last edited by Yunmu on 2019-5-9 23:16. A beginner is looking for information on valves and pipelines
It is recommended to seek help in a targeted manner; just as if the question were \"I need hydrogenation-related materials,\" no one will provide you with all the hydrogenation-related materials at once. There are regular information forums for searching, as well as those dedicated to literature; you can use Baidu for that. At least the request for help should be more specific