Shandong Tongya Traffic Safety Facilities Co., Ltd. is a subsidiary company of Shandong Tongya Group which is a comprehensive enterprise integrating research & development, production, sales and construction of welding pipe, guardrail, hot plating, and static plastic spray. It is a specialized manufacturer of traffic safety facilities such as highway W-beam guardrail, pole and guardrail accessories, supports for anti-glaring board, poles of isolating gratings, etc. with the approval from Test ...