Modesto winery makes much-needed product: Hand sanitizer- sanitizer company in modesto ca ,a time where hand sanitizer, masks, and protective equipment are valuable for protection against the coronaviru gallo has 6500 employees with half working in modesto, and says this production is ...Business has 'exploded' for Modesto company making hand ...Hand sanitizer is not a new product for Enviro Tech Chemical Services in Modesto. The manufacturer has been making their Bac Stop 3A hand sanitizer for 10 years, but the demand they are during the coronavirus crisis is unprecedented. Watch the video above for the full story.