Cixi Wei Xin Ze Communication Equipment Factory 12 fiber distribution boxes DURABILTY plug connector> 1000 times. 1. throughout the radius of curvature of control to ensure that the position of the fiber radius of curvature at any greater than 30mm. 2. Each line fiber have made clearly labeled to avoid confusion during maintenance disassembly may result. 3. flame: A test in line with GB5169.7 requirements. First, the electrical performance of the connector 1. attenuation (insertion, exchange, repeat) ≤ 0.3dB; 2. Return loss: APC type ≥ 60dB, UPC type ≥ 50dB, PC-type ≥ 40dB; 3. high-voltage protection grounding device: 4 Insulation resistance: ≥ 1000M Ω / 500V (DC). 5. Withstand voltage: ≥ 3000V (DC) / 1min, no breakdown, no arc. 6. grounding wire cross-sectional area:> 6mm2, ground to ground at the obvious signs. Second, the advantages of various joints termination 1. convenient and flexible installation. 2. There are drawers and fixed and other specifications;