Occupational Asthma Occupational asthma is often a variety of bronchial asthma due to publicity to a material in the workplace. Signs and indicators consist of wheezing, upper body tightness, and shortness of breath.简介:模具及配件的开发、设计、制作、销售;金属材料、五金配件、机电产品、电子产品的销售;自�