forged iron nails

Latest articles



Popular articles


  • Post time: 23-12-22
  • There is also a scaly or boride film or oxide. To remove the photosynovium or oxide commonly used methods are: lead grease removal method, acoustic cleaning method, alkali washing or pickling electrolysis grease to oxide method, these methods in the use of gas or steam harmful to human body, pollution, not environmental protection.

  • Latest articles

    Links