1.It has passed the BSI authentication in the UK and passed the ISO9001:2000 quality system authentication. 2.It's quality is good and price is low. 3.The suitable cables are H03VV-F 0.5/2,0.75/2,0.5/3,0.75/3,H03VVH2-F 0.75/2,H05VV-F 0.7/2,1.0/2,1.5/2,0.75/3,1.0/3,1.5/3,H05VVH2-F 0.75/2,1./2,H05VV-F 1.25/2,1.25/3.