ChemTradeHub vs PortBackLinks

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

ChemTradeHub compared with PortBackLinks
Detail	ChemTradeHub	PortBackLinks
What it does	Global B2B chemical information platform connecting suppliers and buyers worldwide	Curated directory for finding and managing backlink sources
Stage	Startup	Not given
Founded	2025	Not given
Based in	JP	Not given
Pricing model	Freemium	Freemium
Pricing	Not given	Free: Limited access to backlink sources, 100 submissions limit, up to 3 website workspaces, free directory listings require visible homepage badge. Pro: $4.99/mo with unlimited submissions, full access to 1,000+ backlink sources, unlimited website workspaces, no reciprocal-link requirement for list
Key features	Browse 23,000+ chemical supplier records worldwide Access to chemical and safety data Product quotation request tool Multiple product categories including fine chemicals, pharmaceuticals, and specialty chemicals Chemical structure editor Supplier information and product catalogs Support for multiple languages	Search 1,000+ backlink sources by type, cost, language, and link attributes View submission requirements and costs before outreach Backlink Builder browser extension Multiple website workspaces for organizing campaigns Submission tracking and status pipeline Product directory for indie builders Verified sources with submission checklists Cloud sync and data exports
What makes it different	Largest global chemical supplier directory with over 23,000 supplier records Search by CAS number for precise compound identification Independently operated platform designed to connect global suppliers and buyers	Curated and verified backlink sources with submission requirements shown upfront Organize and track link-building campaigns across multiple websites in one place Browser extension for streamlined outreach workflow
Community votes	0	0
DR (Domain Rating by Ahrefs)	28 no change since last check	14 no change since last check
Trust Flow (Majestic)	18	5
Citation Flow (Majestic)	27	17
Referring domains (Majestic)	44	52

4 details filled in for both companies.

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