Tangshan JinZe Machinery Manufacturing Co.， Ltd (Shortened to TJ MMC or Tangshan Jianhua) is a technology and innovation-based enterprise with coal cleaning project design and R&D and manufacture of coal cleaning equipment as its main business line， The company has long been dedicated to the development and innovation work in coal preparation sphere， in line with the principle of building an energy conservation society and creating a more secured and friendly environment.The FX series pneumatic coal cleaning machine sue cessfully developed by the company in 2001 was granted a national patent(Patent No.ZL 01.2.31426.9) and the enterprise standards on such machines were officially formulated.Since 2005， TJ MMC has developed 100-odd