How to set gas limit and gas price?

It is quite simple and easy.

Gas limit

As a BRIEF SUMMARY:

Gas is metering and fuel for using the Ethereum. Gas limit is the maximum number of gas used to manually set up an Ethereum transaction.

For transactions related to Vision Network, here is a form:

Usage Minimum
Voken2.0 transfer 100,000
Join the whitelist 600,000
Get 1,001 Voken2.0 with 20% OFF 200,000
Voken 2.0 Public-Sale (#6-20 season) 6,000,000
Withdraw dividend from Voken 2.0 Shareholders Contract 300,000

Gas will not be wasted, the actual miner fee will only be calculated on demand, and the remaining portion will be automatically returned to the wallet balance.

Note

There is an article here Ethereum, Gas, Fuel & Fees. (English, by Joseph Chow), that can be used as an extended reading material.

Gas price

Gas price is the price of gas, its unit is gwei.

Generally speaking, the higher the price is set, the faster the Ethereum miners will process your transaction. But reasonable settings can avoid unnecessary waste without having to grab time.

There is a website ETH Gas Station you should know, you can read the current Gas price easily.

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Both FAST and STANDARD is recommended.