【Daily Question】Sulfur Technical Edition, July 16, 2017

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To increase the popularity of this section, a daily quiz campaign has been launched. The goal of this campaign is: “Learn a little bit every day, and make significant progress over ten days.” I hope everyone will participate actively; by learning and making progress, you can also easily bring wealth home :) . Participation: Prize of 5 Wealth ； Correct answer: Reward of 10 wealth points ； Note: Questions from the same day will receive full feedback if answered on the same day; answers given the next day will earn 5-8 wealth points. This post is valid for 48 hours. Multiple-choice question: Which of the following is not a quality indicator for sulfur products? (　　) A. Moisture B. Arsenic content C. Iron content D. pH value Answer: D Petrochemical sector – Innovative ideas for energy savings: “Creative Thinking” campaign (the second phase is currently in progress) http://bbs.hcbbs.com/thread-1666758-1-1.html 2017: Coal chemical industry – “My technical improvements” http://bbs.hcbbs.com/thread-1786290-1-1.html