Q1: Do you have UL certificate? A: Yes,most products are UL listed. Q2: Are you manufacture?A: Yes,we have factory and warehouse in Fuyang Hangzhou city. Q3: How can I request product samples?A: The samples are free but courier charge will be collected. Please send us samples list and courier account number. Q4: How can I request a product catalog? A: The hard copies of catalogs are free but courier charge will be collected. The PDF catalog we can send to you by email or WeTransfer. Q5: What is your payment terms?A: 30% T/T deposit,balance against B/L faxed copy; Irrevocable L/C 100% at sight and irrevocable. Q6: How about the delivery time?A: Accord to your order list and quantity,mostly delivery in 30days.