zhè / jiā / gōng / sī / píng / jiè / chǎn / pǐn / zhì / liàng / de / zhǔ / dǎo / xìng / zhú / jiàn / zhàn / jù / le / shì / chǎng / yōu / shì

这家公司凭借产品质量的主导性，逐渐占据了市场优势。

The company gradually gained a market advantage through the leading position of its product quality.