tool joints, we supply tool Joints are made of AISI 4137 premium alloy steel fully and machined by CNC lathes. All connections are phosphates, coated with lubricant and provided with thread....
Shaanxi Jiahe Phytochem Co., Ltd., is a Hi-Tech enterprise, specializing mainly in cultivating, developing, manufacturing and exporting natural plant products. ¡¡¡¡Located in Xi¡¯an Hi-Tech....