MonotaRO Co Ltd, Japan’s largest MRO B2B ecommerce company, said it has invested $15 million (about Rs 110.5 crore) in a joint venture with Emtex Engineering to grow the latter’s SME (small and medium enterprises) ecommerce business in India. Emtex Engineering operates Industrybuying.com. It has two businesses — SME ecommerce and large enterprise. MonotaRO will own 51.6 percent stake in the JV, IB monotaRO Pvt Ltd, while the rest will be held by Emtex Engineering Pvt Ltd.