Price negotiation not accepted ? New, unopened Azumagic water stain remover 400ml

The foamy detergent penetrates and breaks down dirt, leaving it sparkling clean.
[Acidic Type] This powerful acidic cleaner dissolves and thoroughly removes stubborn, hardened limescale buildup on bathroom faucets, showerheads, doors, walls, floors, and bathtubs.
[With Brush] By scrubbing with the brush while the cleaner dissolves the dirt, the detergent's power is effectively utilized, allowing for the thorough removal of even stubborn stains.
Store the bottle with the brush attached after use.
[Disinfecting Effect] Cleans and disinfects (99%) while removing dirt. *Does not disinfect all types of bacteria.
[Uses] For removing stubborn limescale stains from bathroom faucets, showerheads, doors, walls, floors, bathtubs, etc. *Do not use on mirrors, marble (including artificial marble), surfaces with special coatings, or porous materials like wood.
[How to Use]
*Wear protective gloves and goggles when using.
*May cause discoloration or deterioration on some faucets, showerheads, doors, walls, floors, bathtubs, etc. Test in an inconspicuous area before use. ★May cause discoloration or deterioration of the surface if left for more than 1 minute after spraying.
Do not spray over a wide area at once. Use little by little as instructed below.
1. Turn the spray nozzle to the spray position.
2. Spray once onto the target area (10x10cm), wait 10 seconds, then scrub with a brush or similar tool to work the detergent into the stain.
3. Rinse thoroughly with water within 1 minute after spraying.
Repeat for more effective results on heavily soiled areas.
For severe stains that do not come off with the above method, it is effective to scrape off the surface with a scraper before use.
After use, turn the spray nozzle to the x position, wipe off any liquid from the nozzle and bottle, and then store.
Recommended usage: 1 spray per 10x10cm area.

We repeatedly considered powerful cleaners to remove stubborn limescale stains, but making the chemicals too strong risked damaging the material.
To efficiently remove dirt, we developed a product with a brush.
Professional home cleaners effectively remove dirt by skillfully using detergents and tools.
The brush is based on those actually used by professionals, with repeated consideration given to bristle length, hardness, and grip. By dissolving dirt and allowing the brush to penetrate the detergent, the detergent's power is effectively utilized, allowing for the thorough removal of stubborn stains.
Please try this professional-grade powerful detergent + tool (brush).