What is good quality variable frequency drive?

We think a good quality variable frequency drive depends on three parts.

One it's good design:
If a products born with design defect that is failing products.
We have the most experience VFD R&D stuff in China.
When we design a new products we will fix all potential problem before it released into the market.
That's why when we established we not in the hurry to production although we can.
On the contrary we spended two years developed new generation drives and better than before.
Based on this complete technical platform we can developing new products very quickly.
So that we have capacity customize the customer wanted special drives.
If they using copy software they have nothing to do with it.

Another part it's good materials:
Our outsourcing supplier was supplying to Huawei drives. 
Today they supplying to Emerson and us too.
It's top quality materials of China and after many years market proof.
So that we no need to worry about their quality.
Of course we have QC to check their every times materials too.
You know some company in order to cut cost adopting low quality materials.
But we never do that, quality always comes to first for VTdrive.

The last part it's good producing.
Our production manager Ms. Qin has over 10 years experience working in Hitachi.
So we referenced some good experience from Japanese style of management.
We adopting automatic testing machine.
All testing by comptuer, it's efficient and no manual error.
All drives has bar code after testing.
It means all testing results can be tracing.
Like when made, who made, adopted what batch materials?

After three parts quality control, we utmost reducing the failure rate.