Inquiry (采购产品): Powder coating pre-treatment Dear Sirs, We are a retractable screen door manufacturer. We use methyl Hydrade to do the powder coating pre-treatment. For some profile, smaller cross section profile. it sems work very well. But for the large screen aluminium profile, some of the powder coating surface can be pilled away. We just wondering what the cause, and how to soulve the problem. Dear Sirs, you are the expert, if you can help me to soulve the problem, or give us some suggestions. That will be great appreciate. Look forward to hear of you soon, Thanks in advans. Ms. Jie Wang **** Hidden Message ***** Jie Wang V9T5V9 Company: Eclipse Technologies Inc E-mail: jie@eclipsetechnologies.com **** Hidden Message ***** jie@eclipsetechnologies.com