What is the demand for tech talent at 房地产、建材? Based on job postings in the past year, “机械/仪器仪表类”占28.4%,“其他(研发和技术类)”占13.4%,“电气/能源/动力类”占7.5%,“医疗卫生/美容保健类”占6%,“电子/电器/通信技术类”占6%,“计算机/网络/技术类”占6%,“生物/制药/化工/环保类”占4.5%,“地质矿产冶金”占3%,“农林渔类”占1.5%. For reference only.