
Tại sao Van khí tưới giống hệt nhau lại có giá khác nhau?
There are many factors that affect the price of air valves, such as market conditions, brand, vân vân. Tuy nhiên, if we only consider the product itself and exclude external factors, even if two air valves have exactly the same design, kích cỡ, and appearance, the two main factors that determine their price differences are still material and function.





