- 1. Had clearer total cross section, less obliquity, and better plane of adhesive side than those of Power Press. Quality defects of existing goods were supplemented.
- 2. Maximize the antirust effect and contribute antipollution by applying oxy-nitriding method, not zinc galvanizing method, which is toxic. Apply to eco-friendly antirust effect which maintains in external environmental conditions, much severe condition than salt spray test for 500 hours.