Examples of well-known B2B-focused agencies/platforms:

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Belkins: Specializes in B2B lead generation, offering personalized outreach and appointment setting services.
CIENCE Technologies: Provides an all-in-one lead generation platform with data, software, and human-powered outreach.
Martal Group: Focuses on demand generation for B2B tech companies, offering both inbound and outbound sales support.

Cleverly: Known for its LinkedIn-focused lead generation services.
ZoomInfo / RocketReach: These are primarily B2B estonia phone number list intelligence platforms providing vast databases of company and contact information for sales and marketing teams to use for their own lead generation efforts.
Choosing a Digital Lead Generation Company (Especially in Bangladesh)
When selecting a digital lead generation company, particularly in a region like Bangladesh, several factors are crucial:

Understand Your Goals & Budget: Clearly define what you want to achieve (e.g., more website traffic, higher conversion rates, specific number of qualified leads) and your budget.
Specialization: Does the company specialize in B2C or B2B, and does their expertise align with your needs? Some agencies excel at one over the other.
Experience & Portfolio: Look for companies with a proven track record, case studies, and client testimonials, especially in your industry or niche.

Local Market Understanding: For businesses operating in Bangladesh (or specifically Sherpur), an agency that understands local demographics, consumer behavior, market nuances, and cultural context is invaluable. They should know which digital channels are most effective locally and how to craft culturally relevant messaging.
Examples of Digital Marketing Agencies in Bangladesh (often offering lead gen services): Red Sparrow Digital, BrandViser, Moris Media, Bizcope, Beyond Bracket Ltd. (These are general digital marketing agencies, so inquire about their specific lead generation capabilities and past results).