Question: Recently the sewer line in my house backed up. The plumber who cleaned out the line discovered that tree roots were the problem. I've seen products that you flush down the toilet for this.
Houston-based Westlake Corp. is launching a new product in the United States — molecularly oriented PVC (PVCO) pipe — and will manufacture it at a new 190,000-square-foot plant in Wichita Falls, Texas ...
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