According to your DOB and Vastu Shashtra water purifier sales and service is favourable for you. For improving business you should always care the following vastu tips :
1. For water related business you should warship / pray the god Varun ( the god of water ).
2. Purifies Machine should be fix in north direction in your factory.
3. Electric metre, board and etc should be in south east corner.
4. The owner's suitable place is south west corner and facing east or north corner.
5. A photo of god Ganesh and goddess Laxmi fix on north east corner.
6. You should try to new order for business on Monday and Friday.