Q1. Is this aluminium windows and doors easy to install? A: We have the assembly manual instruction specifically made according to your project site. It's a DIY product designed to be easily assembled and we can provide installation video. Q2. How long is your products' warranty? A: All our products have 10 years warranty. Q3:How to guarantee the quality of the products? A:We have our own QC team to control the products quality for all our clients'orders before loading. Q4. How can i get a price of needed aluminium windows and doors? A: Please give the exactly size and quantity of your required aluminium windows and doors. We can give you a detail quotation and free design solution based on your requirements. Q5.I am a small wholesaler, do you accept small order? A: It's no problem is you are a small wholesaler, we would like to grow up with you together and our MOQ is 1 set. Q6. Is my first time to export from China, what if i have no experience? A: Don t worry, we have very professional sale will guide for and we can provide one stop solution including deliver the door to your home address with customs. Q7. What kind of payment terms would you accept? A: We usually accept T/T, L/C, Western Union, etc. If you prefer other payments terms, please feel free to discuss with us. Q8. What if i meet the problem after installing and using this aluminium windows and doors? A: As our principle is our business had been built on hoes & backed by customer service. we are verified supplier in Alibaba. com and our can provide 10 years warranty, so if you meet any problem for using this aluminium windows and doors,welcome to contact.