Puyu Bookstore, located on the floor of c86 Tea House 1, No.86 Dongfeng East Road, Panlong District, Kunming, sells all kinds of books, including books that meet the testing standards in Kunming.
Oriental Bookstore, the address is No.52, Wen Ming Street, Wuhua District, Kunming, where you can buy books about Kunming testing standards and specifications.