Also safety depends upon the various factors:

Seller reputation
Check on Flipkart of the seller reputation and also check the reviews and rating of the particular product you are interested in.

Product review
Better understanding about the product quality, performance, maintenance and overall satisfaction of other customers. for that check safe or not buying ceiling fan review of the particular product you are interested in.

Product rating
When the highest product rating is then understand the product is better in quality and the lowest product rating is then understand the product quality is not too good.

Returns and refund policy
One checks the Flipkart returns and refund policy. To return the product are quired a valid and acceptable reason .On flipkart specific time for return the particular product you are interested in.