Products are manufactured in ISO 9000 / 9001 / 9002 certified facilities. Products go through multiple inspection processes: Durability Test Platform, Performance Test Platform, High&Low Temperature Fatigue Test Platform, Products Lifetime Test Platform, Multipurpose Numeric Display Hydraulic Pressure Test Machine, Metallographic Detection Device, Salt Spray Test Machine, Spring Tension & Compression Test Machine, Swing Machine, Rockwell Hardness Tester, Brinell Hardness Tester, Shore Hardness Tester, Contourgraph Measuring Machine, Torque Testing Online. R & D Team develop new item with 3D Scanner, UG, PRO/E and AutoCAD. All of our parts had been pre-greased already, no matter greasable or sealed.
It means it's need not to grease the parts again, otherwise, the grease will overflow. Some of the parts we sell have grease fittings, other parts come factory sealed. This does not affect the performance or quality of the parts.
Due to volume of sales we cannot guarantee which type you will receive.