What is the demand for tech talent at 鼎新铜业? Based on job postings in the past year, “地质矿产冶金”占25.8%,“机械/仪器仪表类”占7.3%,“电气/能源/动力类”占5.5%,“生物/制药/化工/环保类”占3.6%,“其他(研发和技术类)”占3.3%,“计算机/网络/技术类”占1.8%,“电子/电器/通信技术类”占0.7%,“科研类”占0.7%,“农林渔类”占0.4%. For reference only.