We are experts focusing on security risk management and control, combining professional knowledge and project practical experience to effectively reduce security risk costs for customers. With the change of bad weather, we have successfully developed a quick-installed backless flood-proof door system to build a waterproof line for customers. In addition, we are also the first firestop contractor certified by Underwriters Laboratories (UL) in China, providing certified construction method installation services through pipe fittings and building gaps to restore the integrity of fire zoning. Believe in Shanghai Weiwang because this is a place where innovation never stops!