Tianjin Tongwei Metal Products Co.,Ltd was established in 2007 and specialize in tire protection chain,snow chain, skidder chain,Traction chain and so on. Our company employs 103 staff members,and has an independent product test platform. During the past years, TONGWEI(TW) tire protection chains have been approved by the three top authoritative certifications and passed the ISO9001-2015 quality management system certification.