Answer first
Zhejiang gives JFScope a defensible starting point because it combines export operators, manufacturing clusters, ports, small-commodity networks and industrial parts ecosystems within a field-researchable region.
Commercial implication
Starting with one province reduces vague China sourcing claims. It lets buyers compare industries, regions and company evidence using consistent rules before supplier outreach.
Method boundary
This article is a methodology note, not a ranking of suppliers or a guarantee of capability.