The phenomenon of building fires is frequently happened .The relationship between heat preservation and fire prevention is in front of everyone. People are thinking about whether to keep warm or fire?In fact, if we need correctly understand the relationship between fire prevention and heat preservat

On September 17, 2019, BBS, the peak of China plastics industry chain and the 30th anniversary of the establishment of China plastics industry association were held in cangzhou bohai international hotel. This BBS, the summit of China plastics industry chain and the 30th anniversary celebration of Ch