Correct

主打

/ zhǔ dá / 
Strokes

Example

As an Adjective

leading

1
Zhǔdá
主打
shāngpǐn
商品

major commodities

2
Zhǔdá
主打
pǐnpái
品牌

brand leader; leading brand

3
Zhǔdá
主打
lánmù
栏目

flagship column

4
Zhǔdá
主打
gē
歌

top song; main hit song

5
Zhǔdá
主打
chǎnpǐn
产品

leading/major product