We are ISO 9001:2015 registered .Whether building expansion joints joint,dismantling joint,valve products or other piping connectors, from 12 mm (1/2″) to 3600 mm (144″) in diameter, our team follows the same procedures to build quality into your product.

Changhong’s products are used throughout the world. No matter where the intended installation, we will work with your team to ensure that you receive the best quality product, which is ideally suited for your application.