Sea cucumbers are helping Costco clean up in China No Comments Uncategorized When Costco opened its first store in mainland China last August, absolute chaos ensued. When Costco opened its first store in mainland China last August, absolute chaos ensued. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to print (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on WhatsApp (Opens in new window)