As we all know that tungsten filament is widely used in light industry. We have many client worldwide to purchase tungsten filament. Among them, there is an American company that have been importing tungsten filament from us for several years.
 
Zhengzhou Sanhui Co.,Ltd has its own factory and mature production line. The surface of our tungsten is smooth though polished process.
 
22 years specialized in dealing refractory metal, we will be your best partner and please do not hesitate to contact us.