I think that this page is from the DNP web site in 2014. When it comes to the date, I am told that the giveaway is the rounded shape of the pulley cage plates around the tension pulley.

It's striking that derailleurs with 84mm long pulley cages are only rated to handle 13-28T freewheels.

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• Publisher: DNP
• Country: Taiwan
• Date: 2014?
• Derailleur brands: DNP
• Derailleurs: DNP Epoch 7 (J137284), DNP Epoch 7 (J137084), DNP Epoch 7 (J1379M84), DNP Epoch 6 (J136084), DNP Epoch 6 (J1309MA84), DNP Epoch 6 (J1309M84)