Where to get a spirometry mouthpiece in Maoming City

Maoming City People's Hospital. According to the query Baidu map that in Maoming City People's Hospital has a spirometry mouthpiece. Maoming, a prefecture-level city in Guangdong Province, is located on the coast of China's South China Sea, located in southwestern Guangdong Province, backed by the southwest of the motherland, east of Yangjiang City, south of the South China Sea, west of Zhanjiang City, north of Yunfu City and the Guangxi Zhuang Autonomous Region junction.