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Shandong PPR pipe recommended dark deposited...
During welding, the pipe fittings have no influence on the welding effect....
Shandong Jian long PP-R pipe operation is simple...
Shandong Jianlong plastic development will be the starting point or the transformation and upgrading of traditional industries...
Comprehensive application of large diameter Shandong PVC drainage pipe...
Shandong Jian long to increase innovation, research and development of new products...