Exhibit 99.1

JOINT FILING AGREEMENT

The undersigned acknowledge and agree that the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13D shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements, The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him or it contained herein and therein, but shall not be responsible for the completeness and accuracy of the information concerning the others, except to the extent that he or it knows or has reason to believe that such information is inaccurate,

ABC BETEILIGUNGEN AKTIENGESELLSCHAFT
By:	/s/ Rolf Birkert
	Rolf Birkert
Deutsche Balaton Biotech AG
By:	/s/ Rolf Birkert
	Rolf Birkert
SPARTA AG
By:	/s/ Philipp Wiedmann	By:	/s/ Eva Katheder
	Philipp Wiedmann		Eva Katheder
HEIDELBERGER BETEILIGUNGSHOLDING AG
By:	/s/ Ralph Bieneck
	Ralph Bieneck
Ming Le Sports AG
By:	/s/ Andreas Danner
	Andreas Danner
ALTECH ADVANCED MATERIALS AG
By:	/s/ Hansjörg Plaggemars
	Hansjörg Plaggemars
DEUTSCHE BALATON AKTIENGESELLSCHAFT
By:	/s/ Rolf Birkert
	Rolf Birkert
VV BETEILIGUNGEN AKTIENGESELLSCHAFT
By:	*
	Wilhelm Konrad Thomas Zours
Strawtec Group AG
By:	/s/ Hansjörg Plaggemars
	Hansjörg Plaggemars
Delphi Unternehmensberatung Aktiengesellschaft
By:	*
	Wilhelm Konrad Thomas Zours

HANSJÖRG PLAGGEMARS

/s/ Hansjörg Plaggemars

RALPH BIENECK

/s/ Ralph Bieneck

ANDREAS DANNER

/s/ Andreas Danner

ROLF BIRKERT

/s/ Rolf Birkert

Wilhelm Konrad Thomas Zours

*

* By:	/s/ Philipp Wiedmann
	Name: Philipp Wiedmann
	Title: Attorney-in-fact