タイトルまたは説明

1)Good insulation characteristic , good insulation property , good fire-resistant, good combustion resistance 2)No rust occurs like metal pipe, resistant to acids, alkali and oil 3)Switch no smell attracting rotent, wil no suffer from biotic attack 4)Protects wire and cable from easy damage or ruin , easy to equiped, long life for use 5)junctionn box are used as junction box , control box or general service box