On May 12, Hebei Yixian Administrative Examination and Approval Bureau made an approval decision on the environmental impact assessment document of the 4 million t/a aggregate production line project of Yixian Jinglan Building Materials Co., Ltd. After the completion of the
project, 4 million tons of sand and gravel aggregate will be produced annually, including 6 kinds of products, namely, 0-4mm aggregate, 4-9mm aggregate, 9-22mm aggregate, 22-31.5mm aggregate, machine-made sand and stone powder.