济南大明湖的西南门,两廊苍松翠柏间有一影巨大石壁突立,色如重墨,晶莹夺目,上面刻勒着毛主席风骨遒劲的烫金草书《采桑子·重阳》词,肃穆庄重,风采独到。这是济南花岗石厂选用名遐中外的“泰山青”花岗石,加工制作而成的。“泰山青”又名鲁青,出产在济南东北郊的驴山、卧牛山、小山一带,属黑色花岗岩,质地坚硬,致密性好,耐磨强度和弹性模数很高,抗压和抗弯强度均高于钢铁,在摄氏400 The southwestern gate of Daming Lake in Jinan has a huge wall of stone standing between the pines and cypresses in the two galleries. The color is like heavy ink and the eyes are crystal-clear. The top gilded cursive style of Mao Zedong’s strong scribbled calligraphy, “Xiazi Ziyang”, is solemn and solemn. Unique style. This was produced by the Jinan granite factory using the “Taishan Qing” granite named after the Chinese and foreign peoples. “Taishanqing”, also known as Luqing, is produced in the northeastern suburbs of Jinan. It is a black granite with hard texture, good compactness, high abrasion resistance and elastic modulus, compressive strength, and bending resistance. The strength is higher than steel, at 400 Celsius