Executive Standard: Q/DGD.057 Product Code: CF07 This product is an acidic cleaning agent, mainly used for water tanks, water heaters, dishwashers and other water and dirt cleaning, can quickly remove the scale, the base scale, rust. Use of safe, non-toxic, no side effects, does not damage the washing object. Features: Appearance: light blue transparent liquid PH value: ≤ 1 Usage: This product will be at 1:20 Duishui injection, for 10 minutes, start the dishwasher for 20 minutes, then rinse with water. Note: When you wear rubber gloves and avoid splashing on the skin and eyes, such as accidentally splashed on skin, eyes, immediately rinse with water. Packaging: 3.78L × 4 / box. Storage: Store in a cool dry place.