山西省化工厅于1991年12月27日至28日在太原市主持召开了不堵塞型聚氨酯橡胶筛板鉴定会。出席会。议的有来自煤炭、化工、冶金、黄金、有色等系统的代表50多人。该筛板由山西省化工研究所合成材料厂承担研制,经四年的研制及工业性试验,取得了较好的效果。由美国A.C.公司引进的煤用2440×4880mm直线振动筛,筛孔为32×32mm,聚氨酯橡胶筛板经1991年8月12日至12月 Shanxi Provincial Department of Chemical Industry in December 27, 1991 to 28 in Taiyuan held a non-blocking polyurethane rubber sieve identification meeting. Attendance There are more than 50 delegates from the coal, chemical, metallurgical, gold and non-ferrous industries. The sieve from the Institute of Chemical Industry in Shanxi Province, the commitment to the development of synthetic materials, after four years of research and industrial tests, and achieved good results. Coal by the United States A.C. Company with 2440 × 4880mm linear vibrating screen, screen 32 × 32mm, polyurethane rubber sieve after August 12 to December 1991