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by changing viscoity

Our company adheres to the intention of making high torque stainless axis rotary damper, rotary viscous damper, acceleration damper with heart, serving with heart and reaching an agreement with customers and we strive to be professional, dedicated and we advocate the business philosophy that customers and I are one. LONGJI is one of thriving and professional by changing viscoity manufacturers and suppliers in China. We can offer you customized by changing viscoity free sample, welcome to order our products.