There are many specifications of the ground bluestone in antique street: 150*300mm, 200*400mm, 300*600mm, 600*600mm, 600*900mm, which can be customized according to the actual situation, and the thickness can be between 10-55mm. If pedestrians can use a thinner one, if driving, it is recommended to use a thickness of more than 40 mm, and there are many manufacturers of bluestone chips. If it is used in antique streets, it is recommended to use sky blue, which is more natural and will never fade. Jiangxi Cheng Leishi and Shandong Jiaxiang Stone are recommended. I hope it can be adopted!