The same sequence applies to every producer, buyer and intermediary we work with. It protects the people we represent and it saves everyone time: counterparties who cannot complete it are not a fit for us.
This is the common framework. Each commodity adds its own requirements on top: phytosanitary and GACC registration for food products entering China, assays and chain-of-custody for metals, forestry certification for timber, and the inspection standard agreed for each contract.