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I will be blunt.  It is a very bland site. It looks like hard work, as soon as see the Home page.I would struggle to make another click. There is no CTA.  So if online sales are the business a big FREE SHIPPING banner etc. some CTA is needed. If you read the below, you would keep looking for products.. somewhere else. (this is the info you have under your product) "Products are becoming increasingly complex, but as technology accelerates, the marketable window of those products continues to shrink. Producers must respond by minimizing inventory and manufacturing in ways that control costs. Scalability is crucial; companies need to increase or decrease production quickly, while ensuring repeatable builds over time and distance. In a myriad of ways, manufacturing must become more responsive to the marketplace." Overall the font is too small. The page looks cluttered. Needs to be made to look simple and easy.  Review 4-5 sites you like shopping from - and then start writing down what improvements you would like made to your site. Hopefully not to overbearing. All the best.

Hello Hasit, and welcome to Moz! This might be a tough one to diagnose without someone spending a decent amount of time looking at your site, your analytics, your backlinks, etc, but the Q&A community will do what we can to help. First, can you give us a URL at all so we can look at the site? When the major site redesign happened, do you know if any redirects were put into place so that people still got to the right pages if URLs changed? Is the site verified in Google and Bing Webmaster Tools? If so, are there any notices there about any actions taken on your site, or problems crawling your site? Your traffic has dropped, but from which sources? In your analytics, look separately at traffic from search, direct traffic, and referral traffic. Did you have some links that were bringing in good traffic, and those sites removed the links? Is the traffic down from all of the search engines, or just one search engine? Have there been any other general changes in the marketing of the site, or in your industry as a whole? Maybe TV advertising stopped, so fewer people were looking for your site, or email newsletters stopped, or paid spend was reduced in AdWords?