... CE,NEMA,ISO,SGS ,NEMA certification. Brief Introduction of China Besca,Ltd >Several years in the manufacturing of Cable Trays,Cable Ladder ... Cable Trunking,etc.>One of the most professional manufacturers in China,very strict Quality Control system.All products passed CE,NEMA ... strut system. One of biggest cable strut systerm exporter in China, BESCA strut channel has been providing its customers with ...