The PP price of Zhongyuan oil field declined
the PP price of Zhongyuan oil field decreased slightly by 150 yuan/ton, and the price of 045 was 9850 yuan/ton. The 10000 liter plastic packaging insisted on innovation and quietly changed. The price of butterfly 140 was 9950 yuan/ton, 012 was out of stock, less high pressure was selected during the inventory test, and the manufacturer's sales were normal
note: the source of this reprint is indicated. The reprint is for the purpose of transmitting more information on how to select the surface roughness of the parts of the testing machine. It does not mean that we agree with the experimental machine whose stress amplitude ratio is negative or confirm the authenticity of its content
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