Recommended models: interior wall cement-based putty, No. 7 moisture-proof putty, No. 8 super putty
 
Mapei is one of the world's leading manufacturers of construction adhesives/sealants and chemical products, with a focus on the manufacture of concrete mortars and cement mixtures, with 81 subsidiaries and 70 factories in 32 countries around the world. In 2017, it was rated as the preferred putty brand of Chinese oilers in 2016 by China Interior Decoration Association.
 
Mapei attaches great importance to technological innovation, and R&D personnel account for about 12% of the total number of employees, and will invest 5% of the annual turnover in R&D every year. It also focuses on environmental protection, with 70% of its annual R&D investment focused on sustainable development and eco-friendly products to meet various construction needs. However, judging from a test report in 2015, although its VOC detection results also meet the standards, they are slightly inferior to similar products of Meisu and JCDecaux.
 
Mapei is good at producing concrete mortar and cement mixture, the number of products is not much, only 2 models can be used indoors, namely interior wall cement-based putty, No. 7 moisture-proof putty, positioning rises in turn, all three are cement-based putty, with excellent water resistance, but the price is higher, even if the lowest positioning of the interior wall cement-based cement-based putty, the wholesale price has been as high as 60 yuan / bag, and the retail price is more than 70-80 yuan.
 
For home users, the basic type of interior wall cement-based putty is enough, this product has all the advantages of cement-based putty: high strength, good adhesion, has very good leveling performance, can effectively smooth rough and uneven substrate, water resistance is also excellent, suitable for use in humid southern areas. The disadvantage is that only in the early stage of drying has good construction performance, and the grinding timing is not easy to master, which has also been mentioned above, and some users have reported that the surface of Mapei putty is rough after scraping, and it is easy to leave sandpaper marks after grinding.
 
Mapei No. 7 moisture-proof putty is a general-purpose putty, suitable for interior and exterior wall renovation and renovation, generally applied to exterior walls, especially suitable for old exterior walls, such as washing stone, marble, glass mosaic, tile and other surface direct renovation transformation, in addition to the advantages of interior wall cement-based putty, but also has a certain waterproof and impermeable performance, can be used in humid environments or pools. No. 7 moisture-proof putty is suitable for all inorganic surfaces such as concrete, lightweight concrete, prefabricated parts, hollow masonry, mortar plastering and gypsum board surface, but when renovating, it is necessary to remove all the old walls and re-level, the construction convenience is general, and the price is as high as 100 yuan / package.
 
No. 8 super putty is pure exterior wall putty, the characteristics are similar to No. 7 putty, but as an exterior wall elastic putty, the crack resistance is higher, and unlike the previous two, No. 8 putty is a two-component putty, that is to say, in addition to adding water, this putty also needs additional additives, according to 20 kg of powder 2.5L additives mixed.
 
However, Mapei putty can basically only be purchased through offline agent stores, which is relatively troublesome, although there are online sales channels, but it is mainly for wholesalers and is not used for retail.