Whether the two repeat, if you want to buy a comprehensive or whether there is no duplication must be both
It has been supported and welcomed by our colleagues in the construction industry As of September it has been printed nine times and printed more than 000 copies However, with the development of scientific research in building materials and the construction industry demand for new materials, new materials, new products continue to come out With the new standards, the development of norms has become inevitable, and the use of certain standards, norms also with the situation changes for regular amendments In view of the above situation.
I organized the editorial strength in the near future, the "existing building materials norms Daquan" published supplement The existing building materials specification Daquan (supplement this) a total of 1177 pages, of which the previous version of cement, concrete, steel, wood, brick, block, glass, ceramics, waterproof materials, finishes, insulation materials, building windows and doors And other parts of the new standard, standardized replacement and update.
The two books are repeated, the supplement is a new version
