Shenzhen Landun Holdings Co., Ltd. is a professional waterproof system operation service provider, holding the highest qualification for special contracting of national building waterproof, anti-corrosion and thermal insulation projects, and has won the "China Building Materials Waterproof Industry Famous Brand" and "Building Waterproof Engineering Jinyu Gold Award" for many times.
 
As the vice president unit of China Building Waterproof Association, Landun's products have passed the demonstration of China Building Standard Design and Research Institute and have been selected as national key building materials new technology projects, and maintain long-term cooperation with well-known real estate companies such as Country Garden, Baoneng Real Estate, Agile, etc., and ranked among the top 10 in the list of preferred waterproof supplier brands in the real estate industry announced in 2017 and 2018, with brand preferred rates of 5% and 9% respectively.
 
"DEC shield of excellence" is the main series of waterproof coatings of Blue Shield, including polyurethane, polymer cement coating (JS), polymer cement waterproof slurry and other varieties, its waterproof coating can be divided into one-component and two-component according to the difference in composition, one-component polyurethane odor is stronger, irritating, mainly used in places with good air mobility, such as exterior walls, roofs, simple operation, open and ready to use. The two-component polyurethane has a small odor and no irritation, because it is a component A and component B and is used for the adjustment and use, the usable area is larger than that of a single component, suitable for a large area of kitchen, basement, etc., the effect is better than that of a single component, of course, the price is several times more expensive than a single component.
 
Compared with other brands, Landun's polymer cement coating (JS) also has many advantages, good extensibility, high strength, excellent water resistance, adhesion, aging resistance and impermeability, whether it is in the wet base, or the façade, inclined plane, facing bricks, roof tiles, cement mortar and other external materials can be firmly bonded, fast drying and curing, not easy to flow.
 
However, the water resistance, adhesion, aging resistance and impermeability of JS are not as good as polyurethane, and the only advantage is that it has excellent environmental performance, non-toxic, tasteless and non-polluting, and is safer than polyurethane. In addition, it should be noted that Landun's waterproof products are only available offline, and there is no online purchase channel.