... .fire-proof,corrosion resistance Building material plastic trunking of many sizes.Product Introduction: Songsu pvc trunking Material: Making of PVC PlasticStandard: IEC 61084-2 ... .,ltd Address:No. 3, Mid First Dongfu Rd., Fulv 1st Industrial Estate, Leliu Town , Shunde District, Guangdong, China (Mainland)Tel: 86 ...