求翻译：我们参观了北京、上海、天津、合肥、青岛、杨中等城市，During this time，We visited Beijing, Shanghai, Tianjin, Hefei, Qingdao and Yangzhong other cities，我参观了惠达陶瓷公司、上海冠龙阀门厂、上海精嘉阀门厂、上海宝临电气公司、上海柘中电气、江苏大全电气集团和江苏中电集团、青岛益和电气、青岛特锐德电气集团、天津特变电工变压器公司、天津紫光测控公司等厂家，，是什么意思？

We visited Beijing, Shanghai, Tianjin, Hefei, Qingdao, Yang medium cities, and during this time, we visited beijing, shanghai, tianjin, hefei, qingdao and yangzhong other cities I visited Huida ceramics company, Shanghai Guanlong valve plant, the Shanghai Jingjia valve plant Baolin Electric Company

We visited Beijing, Shanghai, Tianjin, Qingdao, Hefei, medium-size cities, Yang During We visited, this time, Shanghai Beijing Tianjin, Hefei, and Yangzhong Qingdao, other cities, I visited the ex-gratia to ceramic Co. , Ltd. , Shanghai dragon champion valve factory, Shanghai's valve factory, Shangh

We visited Beijing, Shanghai, Tianjin, Hefei, Qingdao, the Yang medium city, During this time, We visited Beijing, Shanghai, Tianjin, Hefei, Qingdao and Yangzhong other cities, I visited the benefit to reach the ceramic company, Shanghai Crown Dragon Valve%

We visited Beijing, Shanghai, Tianjin, Hefei, Qingdao, Dr secondary cities, During this time,We visited Beijing, Shanghai, Tianjin, Hefei, Qingdao and Yangzhong other cities, I visited the company, Shanghai huida ceramics Crown long valve factory, Shanghai jingjia valve factory, Shanghai Bao electri