One、Which is better, 904 paint and putty powder?
904 coating is a type of interior wall coating, with main components such as polyvinyl alcohol, fillers, and additives, and does not contain toxic solvents like formaldehyde. Due to its easy application, simple maintenance, rich and fine colors, compatibility, intricate patterns, good alkali resistance, water resistance, and resistance to powdering, as well as its good breathability and reasonable price, 904 coating plays a crucial role in interior and exterior decoration.
904 plastic materials with poor UV aging resistance can also be protected by applying UV-stabilized coatings, which can prevent or delay the aging of the plastic substrate. This is particularly important for applications where the material is frequently exposed to outdoor conditions and prolonged exposure to sunlight and artificial short-wave light sources (such as fluorescent lights).
Putty powder is a base material used for repairing and leveling walls, providing a solid foundation for subsequent decoration (painting and wallpapering). Putty is divided into interior and exterior types. Exterior putty is designed to resist wind and sun, so it has high adhesion and strength, but a slightly lower environmental rating. Interior putty has a comprehensive performance rating, is healthy and environmentally friendly, so it should only be used on interior walls, and exterior walls should not be used for interior applications.

In conclusion, 904 paint and putty powder are not the same category of products. One is a type of interior wall paint, and the other is a wall surface repair and leveling base material. Their quality and performance cannot be compared.
II. Tips for selecting putty powder
1、National Standards
National standards represent the minimum requirements for a product's quality. The putty products that must comply with the national standard are "JG/T3049-1998《Interior wall and ceiling joint compound》". Products that meet the standard usually indicate the national standard on their packaging.
2、ISO certification
ISO certification primarily refers to ISO9001-2000 quality system certification. Products manufactured by companies that have obtained ISO certification have guaranteed quality.
3、Check for anti-counterfeiting measures
Manufacturers of branded putty powder typically have strong anti-counterfeiting measures in place to prevent product imitation. Products usually feature anti-counterfeiting labels or digital anti-counterfeiting stickers on the packaging, which can be verified by peeling off the coating and calling a designated number.
4、Choose a brand
Choosing well-known brands with high market share ensures product quality, while products from unknown brands may have inconsistent quality and lack guarantees.
III. important considerations when selecting putty powder
1、Before selecting putty powder, it is essential to choose either general-purpose putty (Y-type) or waterproof putty (N-type) according to actual needs. For normal wall surfaces, it is recommended to use high-quality waterproof putty, as the putty layer is not a paint layer, and rework can be difficult. If the putty layer has a problem, it needs to be removed, which is a time-consuming and costly process. Initially, choosing a cheaper option may seem like a good idea, but in the end, it will lead to higher costs.
2. Ready-mixed putty is preferable to non-ready-mixed putty, as it has good packaging. The packaging should clearly indicate the relevant standards, weight, production date, handling and storage instructions, and the manufacturer's quality inspection certificate.
3. High-quality putty powder can be directly mixed with water for use. Putty that requires additional mixing with materials such as white glue or 108 glue should be purchased separately. It is not recommended to purchase pre-mixed putty.
4. The quality of the putty powder should first be verified at the point of sale to ensure that the supplier has the necessary sales authorization. All reputable putty powder manufacturers will have authorization documents.