Among them is the method of evaluating reliability of reinforced concrete skyscraper. This high-tech method helps measure corrosion degree and surface intensity by taking off test pieces at some parts of the building and estimate its aging state. As the results may be different from each floor, the total estimation of the building is made through application of fuzzy logic on reliability.

Also there are technologies of producing different building fixtures, which won a high appreciation at the exhibition. Especially, the technology of producing large artificial marble by way of coating the surface of concrete parts with marble solution drew eyes of building material producers.

Artificial marble can be easily produced by use of local raw materials, industrial leftovers and boiler molten slag. This artificial marble, little different from natural marble, is long in serviceable life.

Those new technologies include the technology of coloring sculpture ornaments fixed on roofs of Korean-style buildings.

Anionic dyes and the method of fixing lags by inorganic adhesive give a glimpse of the scientific progress in the field of building repairs.

Besides, there are such achievements of practical significance in city beautification as agent for reinforcing vitality of trees, introduction of computer-control system into sewage treatment plants and grass cutters.