ed by us.If it is the men-made problems,we also send the spare parts,however it is charged. Any problem, you can call us directly.3.How can i trust your company?A:With 10-years-professional design, we can provide you suitable suggestion and lowest price1. Assessed by third party, national patents and CE, ISO for all equipment, .2. For our machine, we do very well on HVLS large diameter ceiling fans. Contact Below:Suzhou Optimal Machinery Co.,Ltd.Add:75#,Jiangpu Road,Suzhou Industrial Park,Su