e. Our company set up a complaint phone () If we are not satisfied with the service quality of our company's product quality after-sales service personnel, we can make a complaint. Our company will handle it seriously.
f. Our company regularly contacts customers to know the use of products, help solving various problems that may be encountered during use, solicit opinions, in order to serve customers better.Trimethylolpropane
website:http://www.eastchemy.com/
website2:http://www.eastchemy-ru.com/