... 1.Good quality,competitve price. 2.Many types. double eye boltsSize:M12-M42, Length: 20-500 Property Grade:10. ... CO.,LTD. COMPANY NAME:SHANDONG TONGYA TRAFFIC SAFETY FACILITIES CO.,LTD.Contact: Jane QinCell phone :+8615064878019 Address : NO.2,Tariff-freeZone,Qingdao,Shandong,China. double ...