1. Production Capacity: The first thing to examine is the production capacity of the mineral water bottle production line, which you want to purchase. You need to ensure that it meets your requirement of 12000PCS/H.

2. Quality Standards: It is critical to examine if the production line meets quality standards such as ISO and CE certifications.

3. Cost: Another vital element to consider is the cost of the production line, including its maintenance and operation costs.

4. Equipment Reliability: You should also investigate the reliability of equipment in terms of downtime, maintenance requirements, and expected lifespan.

5. Energy Efficiency: With energy prices rising globally, energy efficiency has become a crucial factor to examine while selecting a production line.

6. Automation Capability: Consider how much automation is available within the production line and what processes will require manual labor.

7. Manufacturer’s Experience: Choose a reputable manufacturer with extensive experience in producing high-quality mineral water bottling lines.

8. After-Sale Service: Ensure that the manufacturer provides excellent after-sale services and support for troubleshooting issues or replacing parts if necessary.

9. Installation Requirements: Make sure to check whether any specific installation requirements need fulfilling before purchasing the machine.

10. Government Policies: Research Nigerian government policies regarding mineral water bottle production lines before making any decisions about investing in one.

As for analyzing ten Nigerian water industries, here are brief descriptions:

1. Nestle Nigeria Plc – Produces bottled water under “Nestle Pure Life” brand.
2. Coca-Cola Nigeria Limited – Produces bottled water under “Eva” brand.
3. Seven-Up Bottling Company – Produces “Aquafina” bottled drinking water.
4. Premier Beverages Limited – Manufactures bottled drinking water under “Valmont” brand.
5. Chi Limited – Produces bottled “Chi Natural Spring Water.”
6. Bel Beverages Nigeria Ltd – An emerging player producing bottled natural spring water under the brand “Vikings.”
7. Gossy Natural Spring Water – A bottled water brand from Gossy Warm Springs Limited.
8. Blue Diamond Table Water – A product of H2O Concepts Ltd, which produces bottled water under the brand name “Blue Diamond.”
9. Wataco Industries Nigeria Limited – Produces popular bottled drinking water known as “Swan Table Water.”
10. Aquadana – A premium mineral water company, producing naturally sourced mineral water in Nigeria.