The wheeled dry powder fire extinguisher is divided into sodium bicarbonate dry powder fire extinguisher and ammonium phosphate dry powder fire extinguisher.
Disposable Medical Face Mask | 3-Layer Medical Masks with Elastic Ear Loops for Adults and Children | Non Woven, Non Latex Breathable Protective Masks for Dust, Germs, Pollutants
• Control expension alloy CE9 carrier replacing Kovar in radar communication system;• Control expension alloy CE9 optical fiber shells replacing Kovar in optoelectronic industry;• Control expension alloy CE9 is used in laser substrate, lense and optical s