Ningbo sea-hill is a manufactory of printer&copier parts,and have over 20 years of experience,yes,we have owner testing center,every products should test first,then to made items,so we can offer you high quality and low price.our products incould fuser film sleeve,upper roller,slowe roller,heating element,transfer roller,pickup roller,separation pad,etc. For more informations you could visit our website:www,sea-hill,com,or add my MSN:liangchao68Qho***il.com