It is the type of tax that will be levied from the company value of 1 Billion $. 
Tax is deducted if advanced companies sell low quality products through the Logistics Warehouse.
You can understand that tax will be deducted from the "On Sale" button being highlighted in orange.

Below is an illustration of the scenario where an advanced company sells low-quality products.

• Under $1 Billion: quality-independent sales on the logistics warehouse are not taxed. 
• Between $1-2 Billion: up to 20% below the average quality of the product and raw materials to be produced
• Between $2-3 Billion: up to 15% below the average quality of the product and raw materials to be produced
• Between $3-4 Billion: up to 10% below the average quality of the product and raw materials to be produced
• Over $4-5 Billion: R&D independent below 20% quality
• Over $5 Billion: R&D independent below 30% quality

2) Let's calculate the quality threshold limit.

Example: Let's correctly calculate the “up to 20% below” portion within the 1-2Mr value range.

2.1 First, find the average quality of the product:

Example:
Glass = 80 quality
Pine Honey = 50 quality

Average = (80 + 50) / 2 = 65 Quality Pine Honey Product

At this stage, you might think the calculation is “65 - 20 = 45.”
However, this is incorrect. Because 20% is not a direct subtraction but a proportional reduction.

2.2 The correct calculation is as follows:

(65/100)×(100−20)=52

So 20% below 65 quality means 52 quality. (We can also say that 20% is deducted from 65 quality.)
In this case, a 51-quality product is subject to tax because it is below 52.

According to the table above, all products sold through the Logistics warehouse are subject to tax. Information: The tax system in our game has nothing to do with real tax systems. It is built according to in-game dynamics.