we were appointed to produce the pneumatic forging hammer by original ministry of machine building of China.Our pneumatic forging hammer was awarded the top prize by China government.We sell 70% of all pneumatic forging hammer sold in China. Our company helped establish the approved standard for all Chinese pneumatic forging hammers. Till now the standard is still in use.We have passed the ISO9001:2000 Quality Certification. Our forging hammers can be equiped with 50Hz and 60Hz three phase or single phase electric motors. We have perfect and strict quality inspection system.Each hammer is tested carefully and inspected strictly before leaving factory.The test certificate will be shipped to you for your records.