Today we trained SNS and knew how to promote our website

Today we trained SNS,like facebook, linked in, twitter  and knew how to promote our website.  Finally we knew that why our google link are more than before,  and why so many customers like our website.  Our products in our website is cnc machining parts, and die casting parts,  die cast parts, injection parts. At the beginning, the google links are increased a lot , but nowadays it increases very slowly. The big reason is that we have no new products, and no more videos, therefore no more UL and no more google link.  However, it is not related with keyword ranking.  In order to keep high keyword ranking, we must improve our SNS and SEM promotion, even put keyword in software. It is long way to improve, so we must keep on it .