W3400 is a concentrated and environmentally friendly water-based cleaning agent developed for post welding cleaning of PCBA (printed circuit board assembly). It is mainly used to remove solder paste or flux residues on electronic assembly PCBA. This product is developed with our patented technology. Its low foam characteristics make it suitable for ultrasonic cleaning, spray cleaning, immersion cleaning and other cleaning processes. When cleaning, this product can be diluted in a certain proportion based on the state of PCBA residue before use, usually diluted 3-5 times with deionized water. The mild formula of this product also has excellent material compatibility with sensitive metals such as aluminum, making it a concentrated and environmentally friendly water-based cleaning agent with good compatibility.