Emerald Packaging Share: Manufacturing Emerald Packaging Visit Website 33050 Western Avenue Union City, CA 94587 (510) 429-5700 (510) 429-5715 (fax) About Map About One of the largest flexible packaging manufacturers on the West Coast and one of the biggest suppliers of produce packaging in the country. What's Nearby? Distance: 5 10 15 20 25 50 mi.