vacuum pump 谁可以供应？急！！！ 我有一个客户 需要vacuum pump，规格要接近以下要求： PRESSURE ? 20Hg (INCHES MERCURY) 18 OR EVEN 15 WOULD POSSIBLY WORK ? PRESSURE NOT HELD ? SERVICE LIFE 2-3 HOURS PER ANNUM ? 30 LITRES PER MINUTE ? ELECTRIC MOTOR & PUMP ONLY NOT IP RATED (NO CASINGS ETC). ? SIZE NOT CRITICAL, SMALLER THE BETTER ? 240V IDEAL BUT ANY OTHER VOLTAGE ACCEPTABLE (12V OR 24V) ? 62DB IS AN ACCEPTABLE NOISE LEVEL, 80DB WOULD BE TOO HIGH 如果哪位可以提供 请速联系我 QQ 672363770 手机：18921356272
