Grewin is the biggest toroidal transformers in the north of China and recieved ETL,CE, IEC, CB , ISO9001 approvals.
Please note that our company will be closed for the Chinese New Year celebration from January 29th to February 6th.
Normal business will resume on February 7th.
In order to provide our best services for you, please kindly help pre-arrange your requests in advance.
If you have any emergencies during the holidays, please feel free to contact us a:
[phone number：+86 13072088960 or email ：email@example.com]
At the early of the year 2022, we would like to express our best wishes and thankfulness for your great support in the past year.
Meanwhile, We are looking forward to better cooperation with your company in the New Year.