1. All responsible of quality.

(1). Controlling of resent quality

(2). Correct of incorrect phenomenon

(3). Remove reason of non-conforming products

(4). Root analysis

(5). Inspection of solution

(6). Require all works inspect by themselves on site

2. More frequent and different content training.

3. Everyone can give suggestion of quality control

4. Operating stable. Require all workers working with operation instruction and self inspection