They plan to build this product into their flagship brand.
Tips
usage
主打 (zhǔdǎ, 'leading / featured') attaches to other nouns the same way — 主打产品 (zhǔdǎ chǎnpǐn, 'flagship product'), 主打歌 (zhǔdǎgē, 'title track of an album'). Common in marketing and entertainment writing.