Haha, no charge, of course, it is still the world's largest rubber dam, very good, very bullish rubber dam to see the achievements! Very good (Guinness World Records (China) Declaration Center hosted the fourth Guinness World Records China Award Ceremony Ceremony in Beijing, and held the grand ceremony of the Chinese Century Temple. Shandong Linyi Xiaoxu East River Rubber Dam was selected as one of the 15 projects of the fourth Guinness World Records. It is the longest rubber dam in the world.)