The Note when choosing adhesives
I Storage period
1. Each product has a storage period. According to international standards and domestic standards, the storage period refers to normal temperature (24°C). Acrylic glue is 20℃.
2. For acrylic products, the higher the temperature, the shorter the storage period.
3. For water-based products, if the temperature is below minus 1℃, it will directly affect the product quality.

II Strength
1. There is no universal glue in the world. It is best to use special adhesives for different adherends.
2. If the strength of the adherend itself is low, it is not necessary to choose high-strength products, otherwise, it will overuse materials and increase costs.
3. We should not only focus on high initial strength, but also consider good durability.
4. The performance of high-temperature curing adhesives is much higher than that of room temperature curing adhesives. If high strength and good durability are required, high-temperature curing adhesives should be used.
5. Except for emergency or small-area repair and continuous production, cyanoacrylate glue (502 strong glue) should not be used for materials requiring high bonding strength.

III Other
1. White latex and urea-formaldehyde glue cannot be used to adhere to metal.
2. For adhesives that require transparency, polyurethane glue, optical epoxy glue, saturated polyester glue, and polyvinyl acetal glue can be used.
3. The adhesive should not be corrosive to the adherend. For example: polystyrene foam board, solvent-based neoprene adhesive cannot be used.
4. Adhesives with higher brittleness are not suitable for sticking to soft materials.

IV The note when using AB glue
1. For AB component adhesives, when proportioning, please follow the requirements of the instructions.
2. For AB component adhesives, be sure to stir them thoroughly before use. No dead ends can be left, otherwise it will not solidify.
3. The adherend must be clean and free of moisture (except for underwater curing glue).
4. In order to achieve high bonding strength, the adherend should be polished as much as possible.
5. The quality of the bonding joint design determines the bonding strength.
6. When using the adhesive, it must be prepared and used immediately. It must not be left for too long. If it is cured quickly, it should generally not exceed 2 minutes.
7. If you want high strength and fast curing, you can heat it according to the situation. When applying glue, it should not be too thick. Generally, 0.5mm is suitable. The thicker the glue, the worse the bonding effect.
8. When bonding objects, it is best to apply pressure or fix them with clamps.
9. In order to achieve higher strength, it is best to leave it for 24 hours after bonding.
10. For single-component solvent-based or water-based formulations, be sure to stir evenly when using.
11. For solvent-based products, after gluing, they must be cooled until they are no longer sticky to your hands before gluing.