License Agreement between

ERK Eckrohrkessel GmbH and Zhejiang Tuff Development CO., LTD.

For the Year 2022

It is certified that Zhejiang Tuff Development CO., LTD. with its registered office in Chang'an Town, Haining City, Zhejiang Province Nr. 1036, Wenhai North Road has signed a license agreement with ERK® as follows

- Licensed Technology(ies)

ERK® Boiler Systems including Eckrohrkessel / corner tube boiler and Other Kind Of Industrial Boiler.

- Territory

	Exclusive territory-		None.
	Non-Exclusive territory-		Rest of the World.

Zhejiang Tuff Development CO., LTD. is ERK's official licensee and has the right and license for manufacturing, procurement, erection, commissioning and maintenance of the licensed product in exclusive territory as well as non-exclusive territory as per contract.

This certificate is generally only valid as an online certificate on the website of ERK Eckrohrkessel GmbH, www.erk-systems.com.

Director Professor Udo Hellwig, PhD Engineering

Date 26.11.2021

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