Soldering flux paste gel for electronics Diamond Flux FN231 was obtained as a result of deep development and in the spring of 2023 the commercial product was ready to start sales. Development was carried out in Florida, Hallandale. It is also produced and packaged here.
  The research lasted about 1 year and 17 serious experiments and an insane number of small tests were done.
  To create a solder flux for soldering electronics, a number of requirements must be taken into account, and each requirement is very important.
  Some of the requirements: No halogens, no current leakage, corrosion resistance, operating temperature range, boiling points, no smoke during soldering, toxicity indicators, harm to the environment and people, shelf life, easy cleaning and many other indicators that are no less important.
  To achieve stable performance, it is necessary to carefully select chemical components, calculate formulas and molar masses. Each iteration of the soldering flux formula must undergo a series of checks and tests. The tests also require equipment that was purchased. Only numbers obtained as a result of experiments will give a complete understanding of the operation of the resulting formula. And now the developer company Express-24 LLC is confident that if soldering flux residues remain under the replaced microcircuit or SMD components, then the Printed Circuit Board will work, there will be no current leaks, and there will be no corrosion.
  Flux consists of organic substances that have been processed and purified to one degree or another. In its composition, each chemical component plays its own important role.
  This soldering flux is low activity, which is why it works well in areas where there is no corrosion on the conductors. This is an excellent flux for soldering new Printed Circuit Boards in manufactory and for repairing various electronics PCBs, including wire harnesses. There is no way to wash the flux out from under the wire braid, which means the solder flux under the wire insulation will remain forever and it should not cause harm to the wire - this is the most important indicator.
  We also thought about the packaging and understand that when transporting soldering flux in syringe, its packaging may be damaged, and for this purpose the syringe was packed in a vacuum package, which also contains a needle for the syringe.
  Since the soldering flux is produced in the United States, its cost price is quite high. The competition is at the highest level and we are very pleased to take part in an honest quality relay race for customers. We will be happy to answer your questions if any difficulties arise during the soldering process. Feel free to contact e-mail for any technological difficulties! We have extensive experience in the electronics PCBs production and repair of electronics, in technical processes on any equipment for the manufactory and repair of Printed Circuit Boards.

Thank you!