... 2 According to user's requirements, we can product different precision filter elements.3 Filtering ... has 5μ, 20μm, 50μm, 100μm.4 Our products are safe and reliable ... your reference. There must be a kind suits you )2.3 Regulators used indoor, buildings, medium and ... regions. Our company has always being focused on research, development and innovation and we ... Leshan ,Sichuan,China Open type of Gas filter