Product Name: 25mm DC Tubular Motor with External Solar Panel for Roller Blinds Model NO.: RM25LE-1.1/20 Color: Blue Material: metal Usage: Living Room, Bedding Room, Office Style: Modern Open Type: Electric Structure: Horizontal Kind: Venetian Delivery: 25~30days Warranty: 5years Trademark: ROLLWIN Transport Package: Box and Pallet Specification: 297mm Origin: Zhejiang, China HS Code: 8501400000 Product Description FAQ_______________________________________________________________1.How to choose a suitable motor? The formula is :N.m=Reel pipe Radius(mm)*loading weight(kg)/100. For example, if the loading weight is 50kg ,and the reel pipe radius is 30mm,please figure out the torque of the motor. N.m=30*50kg/100=15N.m. 2.How about the weight can the motor load? The formula is :Loading weight(kg)=N.m*100/ Reel pipe Radius(mm). For example: the torque of the motor is 15N.m,the Reel pipe Radius is 30mm please figure out the the loading weight.Loading weight(kg)=15N.m*100/ 30 Reel pipe Radius(mm)=50kg. 3.What's your MOQ? 1 pieces.If you order more,there will be a discount. 4.Are you manufacturer or trading company? We are manufacturer for 16 years experience. 5.Can I customize the packing and motor's color? Yes,we can produce the packing according to your design. 6.My order quantity is small, can you provide? We support sample/small/big/full order, and no matter how many quantity you want, we willalways provide you the fastest and professional service right away. 7: Can you accept OEM service? Yes, sure and welcome 8: What is the lead time? Sample is 7days, small trial or full order is usually 7-15days. 9: What kind of payment do you accept? Payment welcome T/T, L/C,Alibaba Trade Assurance (more welcomed) 10: Can you provide free sample? Can benegotiation,According to the true order.