1. Why does the product have color difference?

     The temperature of oven is nonuniform.

     2. Why does product appear nonuniform coating?

     A.  Powder gun can’t spray uniform coating.

     B.  The speed of chain and elevators do not match.

     C. thickness gauge to test the same product as per national standard,the thickness should be reached 60-75um.

     3.  Why coating will be fall off?

     A. Surface heavy oil, spraying stages are not enough, rinse is not clean.

     B. Lack in advanced return air system leading to the effective temperature range is not enough, the product is not heating well.

     4. Why conventional coating equipment can’t achieve environmental protection standard?

     A. Powder spillover makes environmental pollution.

     B. Exhaust emissions from curing oven.