If you have a website and want to showcase your products then you have to decide how you are going to obtain images of the products. IF it is a product that you have designed or manufactured then you may have to hire a professional photographer to take images for you to use. Do not be tempted to take your own images unless you are confident in photography and also have good quality imaging equipment.
If the product is brought from a manufacturer then you can ask them if they have images that you can use on your website. Their images are often of a high quality and usually they will not mind you using them as it is advertising for them. Do always make sure that you have permission though, and ideally in try and get it in writing, otherwise you could find yourself in a copyright legal battle.