Russian human hair extension double drawn virgin hair extensions flat weft hair

Hi, I'm interested in your Russian double drawn weft hair, I'm wanting to stock weft hair and was wondering your prices and if you could give me more information on your hair. How many colours do you supply and do you do custom colours? Also do you offer samples to try? Also how long does the hair last and is the hair remy? Thanks.
Chemical Processing:None
Hair Extension Type:Hair Weaving
Hair Grade:Remy Hair
Hair Weft:Machine Double Weft
Human Hair Type:Russian hair
Longest Hair Ratio:>=35%
Place of Origin:CN
Pre-Bonded Type:NAIL
Style:Silky Straight Wave
Suitable Dying Colors:ALL COLORS
Virgin Hair:Yes
Pre-Bonded Style:flat weft
Brand Name:Haohao-holy
Weight:100g
Length:10