w7tOJAXKMZBMFAyk+DgGCglBYJ8wUKAOH45QlBxWisaXHctCIwFL1RPW8NpLGTKaPBgYWx+YXePd iVmYIQ7Mut3wHqeoi687Au+uClWAsVR5k0qb6MwLUqoRyStUnLxH9aUPbfb5GOxN5r3Bk22fbGgC xhILsJT3HNLDL09oB3C1oN8SbwlNd3EJnAdwr/DGs4FwGiUBO14bQkAKehYg6gkENHMUwFGEZs6H AYqS5c7wVgRJwXsGGDi6wRVBCRgx6oOAVveE4NkT...
TOP VISION is a professional manufacturer of mobile electronics, focusing on car safety products, including parking assist systems, car camera systems as well as alarm sirens. With more than 10 years experience in this industry, we win long term business relationship and respect from our worldwide...
钻柱转换接头是石油、天然气钻井作业中转换连接钻柱构件的转换接头。其根据外形可分为A型(同径式)、B型(异径式)、C型(左旋式)和D型(左右旋式)四中型式。 顶驱旋塞阀 顶驱旋塞阀用于顶驱钻井装置上,可分为顶驱上旋塞和顶驱下旋塞两种,他们是与顶驱系统配套配套使用的一种控制阀,通常情况下两个阀串接与顶部驱动...