A company in Carbon Dioxide Removal, or CDR, is involved in the development of technologies, services, or products that actively capture and remove carbon dioxide from the atmosphere. These companies aim to reduce the overall concentration of carbon dioxide in the atmosphere, mitigating the effects of global warming and climate change. Some popular CDR methods include direct air capture, carbon mineralization, bio-energy with carbon capture and storage, and ocean fertilization among others.

1. Afforestation and Reforestation: This involves planting trees to absorb more carbon dioxide as they grow. This method is typically inexpensive but can depend highly on land availability and competing land uses.  

2. Bioenergy with Carbon Capture and Storage (BECCS): This technique involves the growth of bioenergy crops that absorb CO2, which is then captured when the biomass is burnt for electricity, and then stored underground to prevent it from being released into the atmosphere.  

3. Enhanced Weathering: This involves the spreading of crushed minerals, which reacts with the CO2 in the air (or seawater) and forms stable carbonates, sequestering the carbon.  

4. Direct Air Capture (DAC): In this process, machines directly capture CO2 from the atmosphere and then store it or use it for other purposes.  

5. Ocean Alkalinization: This involves distributing alkaline substances (like crushed limestone) on ocean surfaces, increasing their capacity to absorb CO2.  

6. Blue Carbon: This includes the protection and enhancement of coastal and marine ecosystems, including tidal marshes, seagrasses, and mangroves, which have the ability to sequester carbon in soils and sediments at a higher rate than terrestrial forests.  

7. Soil Carbon Sequestration: This involves agricultural practices, like reduced tillage and cover cropping, to increase the amount of carbon stored in soil.  

8. Ocean Fertilization: In this method, nutrients are added to parts of the ocean to stimulate the growth of phytoplankton, which absorb carbon dioxide as they grow.  

9. Carbon Mineralization: Here, CO2 is reacted with abundant raw materials to form carbonate minerals, thereby preserving the carbon in a solid and stable state.  

Note that not all these techniques are widely accepted or feasible; some are experimental and others are used on a limited scale due to potential environmental impacts or high costs.

Carbon Dioxide Removal (CDR) methods refer to a number of technologies that reduce the levels of carbon dioxide in the atmosphere. This can help with decarbonization in several ways:  

1. Reducing greenhouse gases: The removal of carbon dioxide, a greenhouse gas, from the atmosphere helps to lower the overall concentration of these gases. This in turn can help to slow down the rate of global warming and climate change.  

2. Offset carbon emissions: CDR technologies can essentially "cancel out" carbon emissions from industries and other sources, making them carbon-neutral or even carbon-negative.  

3. Restore balance in carbon cycle: The increasing amount of CO2 in our atmosphere is disrupting our natural carbon cycle. CDR can help restore balance in this cycle by removing excess CO2.  

4. Allow for continued use of fossil fuels: While a transition to renewable energy sources is ultimately necessary for sustainable living, CDR technologies can buy more time for this transition by offsetting the emissions from continued use of fossil fuels.  

5. Potential for carbon capture and usage: Some CDR technologies allow for the captured carbon to be reused or sold for other purposes, such as in the production of fuel, plastics, or other commodities.  

It should be noted that reliance on CDR technologies should not replace efforts to reduce carbon emissions in the first place. They are tools for mitigation and should be used in conjunction with emission reduction strategies.

1. Establish Your Needs: Identify what your specific needs are. These could involve retrofitting existing infrastructure, establishing new facilities, or implementing carbon capture technology in current operations.  

2. Vendor Research: Begin researching various CDR vendors, and gather as much information as possible about their operation, technology, cost, services, etc.  

3. Scrutinize the Technology: Check if the technology employed by the vendor is commercially viable, energy-efficient, and capable of large-scale operations. Also, examine the life cycle and durability of the technology.  

4. Assert Credentials: Make sure the vendor has a proven track record of successful projects. Furthermore, check whether they have any recognition or certifications from accredited organizations.  

5. Economic Assessment: Consider the financial aspect - estimate operational and maintenance costs alongside the potential profits.  

6. Regulatory Compliance: Ensure the vendor’s technology complies with local, regional, and global environmental regulations. Non-compliance could lead to penalties and damage to company’s reputation.  

7. Customer Service and Support: Look at their after-sale service, like technical support, routine maintenance, and part replacement.  

8. Request Proposals: Ask potential vendors for proposals to better understand their capabilities and how they would seek to address your needs.  

9. Evaluate and Compare: Compare vendors based on factors such as technology, cost, reputation, past clients, etc. This will help you decide the pros and cons of each.  

10. Consult Other Companies: Speak with companies that have used CDR vendors in the past to learn from their experiences.  

11. Test The Services: If possible, do a pilot project to assess vendor performance before you fully commit.  

12. Finalize and implement: Once you've chosen a vendor, work with them to formulate an implementation plan that suits your company's needs.   Remember, the goal is not to find the cheapest vendor but the one which will optimally meet your needs while contributing to the overall reduction of your company’s carbon footprint.