Best Matrimonial Service Provider in Delhi Gupta Ji Marriage Bureau Pvt. Ltd. (Shakti Nagar) or GMB, as we are fondly called, is one of India’s Largest and Most Trusted matrimonial services provider for the Gupta, Jain, Aggarwal, Marwari, and Khandelwal community. Finding the perfect life partner is a dream come true. If you are a parent, finding the right life partner for your child is a critical responsibility. But, the search can sometimes get tedious and a challenging task without the right approach and guidance.