Text: 5 it's too small.

Correct capitalization: 5 It's too small.

Text: our driving wheels allow simple, efficient, low-noise and cost-effective drive design, even with problematic rolling contact drives.

Correct capitalization: Our driving wheels allow simple, efficient, low-noise and cost-effective drive design, even with problematic rolling contact drives.

Text: china, photos of china, china pictures , pictures - mount hua shan

Correct capitalization: China, photos of China, China pictures , pictures - Mount Hua Shan

Text: cup diameter 12 cm.

Correct capitalization:
Cup diameter 12 cm.