Shop Insurance - which company has good policy to cover my shop?

I've a shop in Thane. I would like to insure my shop. Please suggest me - which company has good policy to cover my shop from following threats -
1- Natural calamity ( like water logging/earth quake )
2- Fire ( short circuit / bomb etc. )
3- Theft ( Shop Goods Burglar )
4- Riots ( communal / personal etc.)

Thanks,
Via email @ Milind

You can buy National Insurance Company Limited's SHOPKEEPERS INSURANCE.
Bomb (?) - Not covered.
Riots ( personal -?) - Not covered.

If you are talking about Terrorism Cover (Bomb?), this would be covered after paying additional premium.