... and design,are design,are newly designed by our company on basis of our primary SWA series,It possesses following features: ... -weight,delicate apearance,reliable apeartion,the electrical properties of our product can reach up to the international advance level ... dffective factor TIF≤5010. Voltage of other range depends on the customers request.ENVIRONMENT CONDITIONSUnder the following environment,the ...