- Manufacture of optical and electro-optic products, such as spotting scopes, fieldscopes, telescopes, binoculars, hand telescopes, tripods, window mount, range finders, golf scopes, eyepieces, spotters, boresighters, t-2 mounts, desktop tripods, mini monoculars.www.longperng.com.tw
- Manufacturer of umbrella, parasol.www.colorsbrella.com