... 20)14.7~29.4(20~40)36.8~44.1(50~60)51.5~58.8(70~ ... /3, 200/3.51280/2, 760/3, 500/4, 450/4.31280/2, 760/3, 500/4, 450/4.31280/2, 760/3, 500/4, 340/5, ... production technology;Sound management system and solid economic strength 3. Advanced Testing Measures: Exclusive R&D, testing ... undertaking national research projects;Exclusive professional platform 4. Sound after-sale system, sincere and all-aspect ...