... ROHS, SGS .5. Packing: neutral or as per client's requirement.6. Colour: red ,white,black ,blue ,yellow,green ... can be make on your requirement ,but o-ring's mold fee is free Company Name: Tianjin Jinjin ... Tester, Optical Projector.Production Equipments Rubber Preforming Machine, Rubber Injection Machine, Rubber Compression Molding Machine, Rubber Extrusion Machine, Cryogenic Deflashing Machine, ...