... (3) series:71900, 7000,7200, 7300, 71800 series(4) structure:AC, C, B , with contact angle 25,15,40 degree, brass cage or ... /Outer wooden case(2) For OD above 250 mm: Wrapped with water-proof belt then put in wooden case4. delivery time ... ) 30% T/T in advance.70% L/C at sight(3) 100% L/C at sight.6.contact information: Joy JiaTel: +86 ...