Our products are also widely used in the chemical industry. In the chemical industry, corrosion coupon, chemical injection and pipeline pig are more used. Because many chemical reagents are highly corrosive, the application of corrosion coupon is very necessary. In addition, chemical injection often plays a very important role in the production of chemical reagents. The pig is used to clean the residual gas or liquid in the pipeline to prolong the service life of the pipeline. Pig indicator and pig receiver are the supporting equipment of the pig. They can cooperate with the work of the pig and get relevant information about the working pig. Moreover, our bidirectional pig indicator can continue to operate when workers forget to reset manually, which is convenient for maintenance and overhaul. Therefore, in the chemical industry, there are also applications of our products.