... Number: NH3,ultra high ammonia,electronic ammonia,99.9~99.99999, Ammonia gasItem: NH3 gasUsage: NH3,ultra high ammonia,electronic ammonia,99.9~99. ... Detail:Shipped in 15 days after paymentNH3,ultra high ammonia,electronic ammonia,99.9~99.99999Ammonia or azane is a compound ... only manufacture in China,who can product 7N ultra high ammonia(NH3).As the technical annovation of gas industry, Jinhonggas ...