Complex sentence: Wo Shing Wo was established in Sham Shui Po in 1930 and while maintaining its traditional stronghold in Tsuen Wan, it has extended its influence to Tsim Sha Tsui and Mong Kok.
Split into simpler sentences: Wo Shing Wo was established in Sham Shui Po in 1930. While maintaining its traditional stronghold in Tsuen Wan, it has extended its influence to Tsim Sha Tsui and Mong Kok.