中文无码在线观看第一页,丝袜美腿国产一区手机在线不卡看片,色偷偷一区二区无码视频,亚洲日本精品

In March 2011, our company successfully developed a high-performance silicone foam stabilizer SD-601. Broad-spectrum silicone stabilizer with excellent comprehensive properties, suitable for the application of HCFC-141b foaming system. It can make the foam cells fine and uniform, with excellent fluidity, good density distribution and outstanding dimensional stability. SD-601 can be widely used in polyurethane rigid foam industry, especially suitable for various polyurethane sheets, pipes, solar water heaters and other fields.