In June 2004, Beijing took the lead in issuing the design standard of 65% building energy efficiency. According to the national energy saving development plan, ···
A layer of perlite is laid under the waterproof layer in the construction process of roof engineering. Due to the lack of compaction and effective waterproof wo···
I believe many building friends will encounter the problem of purchasing hydrophobic perlite, but hydrophobic perlite should be more expensive. Can you afford i···
