Sir, i will suggest that you do both seo and google ads as it will help you get business enquiries & orders.
Both SEO & PPC are vital to the success of your business. You cannot establish domain authority, organic brand affinity, and really, a wholly formed online presence without SEO. By the same token, you can’t granularly target prospects by demographic, behaviors, or keywords without PPC. By combining both organic and paid search effectively, businesses can obtain far greater results and SERP outcomes.
We recommend you to go for a search marketing campaign including both website SEO and Google search ads, with more focus on Ads in the initial 3 months for getting leads and inquiries immediately from your focus markets. You can optimize this budget once you start getting organic traffic and leads from your SEO campaign.
Social media marketing definitely helps with your organic traffic. However, if you have a budget constraint it is belter to start with the combination of Google ads and SEO.
You can also check out this blog for more insights: https://www.nebulatech.in/post/importance-of-digital-marketing-for-the-manufacturing-sector-in-india