1. the application range of the design is shown in the field of technology, two shoulder ridge. the invention is to solve the technology, has always been to the air injection type anti fu qiu fu qiu that the problems in the party's construction and the damage caused by the damage of the tube, the air injection type shoulder ridge with a shoulder ridge as a function of the three. the design method of the solution of the point of shoulder ridge body to clean the inside and outside of the building, in the plastic, and has always been good to solve the problems, the four fu qiu. the use of the important food fish in the.
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