What is the demand for tech talent at Weldon Environmental Protection Equipment? Based on job postings in the past year, “电气/能源/动力类”占14%，“机械/仪器仪表类”占12%，“其他（研发和技术类）”占10%，“生物/制药/化工/环保类”占4%，“地质矿产冶金”占1.3%，“计算机/网络/技术类”占1.3%，“美术/设计/创意类”占0.7%. For reference only.
