Shanghai Hongyu Industry Co., Ltd is specializing in hydraulic parts , electrical parts, reducer and other SANY & ZOOMLION of various pumps.
Many cheap and cheerful DIY 3D printers, such as the Prusa i3 and other RepRap machines, use a threaded rod for their z-axis. The threaded rod is a cheap piece of equipment
ZHEJIANG TAIDA PIPE INDUSTRY CO.,LTD
Dongxing Telecommunication Material Co.,Ltd