1、Test mould/ change the mould often (product design/ mould design problem).

2、Mechanical have many people (manufactured large, mould quality poor).

3、Injection molding machine often stop production to repair the mould (mould maintenance work are poor).

4、Injection molding machine fault, stop work to maintenance for a long time (injection molding machine maintenance poor).

5、 Unreasonable staffing (division unknown, duty is not clear)

6、 Don’t attach importance to training (training is the highest rate of return on investment).

7、 Each staff with low job skills, working quality poor.

8、Technical/ management still stay in last level.

9、 Raw materials waste large, high rate of defective products, lot reject, power consumption, accommodation note or beyond yield production, high cost.

10、Production planning arrangement inappropriate, often change injection molding machine.