Sales & Customer Service

Monika Dietsche 
Internal Sales 

Direct tel. +41 44 405 44 57
m.dietsche@wiedmer.ch

Rebecca Estreich 
Internal Sales 

Direct tel. +41 44 405 44 59 
r.estreich@wiedmer.ch

Willi Etle
Key Account Manager,
national & international

Direct tel. +41 44 727 37 60
w.etle@wiedmer.ch

Ramona Lacher 
Administration & Back Office 


Direct tel. +41 44 405 44 68 
r.lacher@wiedmer.ch

Michèle Quero 
Internal Sales 


Direct tel. +41 44 405 44 58 
m.quero@wiedmer.ch

Hannes Weinberger 
Head of Sales 
Member of the Management 

Direct tel. +41 44 818 88 42 
h.weinberger@wiedmer.ch 

Willy Wiedmer 
Sales & Customer Advisor 
Member of the Management 

Direct tel. +41 44 405 44 50 
w.wiedmer@wiedmer.ch

Philippe Walsch
Sales & Customer Advisor 

(Starting January 2025)