I have categories with a lot of products, like about 50 in hydraulics single-scissor tables http://5com.ro/76-mese-de-ridicare-cu-o-singura-foarfeca and the only difference between these products are some minor tech specifications. So i can't really be inventive about the tags i use, or the description. Any solutions to my problem?
"1 keyword or "1, keyword"? First one would be a different keyword for google (i think), the second one... dunno.
but you can use these minor tech specifications in your keywords so it will not be a duplicate content problem?
Do your product pages have any text at all? You can get rid of meta description altogether if you don't have a good way to keep them unique.
Meta tags are ment for the surfer - Keywords have no meaning, Descriptions are important since thats what the client sees on SERPs just before he/she hits the page. Google does not give any value to meta keyword or description so it won't be relevant to add strings just to make them unique. Make meta description for the end user or don't bother at all.
You can use longtail keywords... they will help you make difference as well as solve your problem. you can use the property with the product name to make longtail keyword. In SEO aspect also, it is beneficial to have longtail keywods. as they are easy to target as compared to short keywords.