Freon exists both in liquid and gaseous states.氟利昂有液態(tài)和氣態(tài)兩種形態(tài)。Ref. Freon piping to be done air - tightness test and vacuum test.冷藏氟利昂管系密性試驗(yàn)和真空試驗(yàn).It adopts Freon to refrigeration. It is safe and reliable.采用氟里昂制冷, 安全可靠,溫度自動(dòng)...