... Q235 & Q345 3. Design: As your requiremen Telecommunication Tower Steel Structure San Bou Sing (HK) Limited is the wholly-owned subsidiary ... Equipment and Fitting CO., LTD., which is the top steel tower manufacturer in Guangdong. I. Specification MaterialQ235, Q345, ... ,South America,Oceania,ect II. Company Main ProfileSince 1997Top Steel Tower Manufacturer in Guangdong, China, covering more than 90 ...