ordinary PVC pipes are cheap and not environmentally friendly enough. Compared to HDPE pipes, HDPE pipes are slightly more expensive.

Determine whether a plastic bag is a biodegradable plastic bag in daily life can have four ways: Look at the exterior of the plastic bag, Look at the touch of the plastic bag,Smell the smell of plastic bags,Listen to the sound of plastic bags

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PVC films can be roughly divided into two categories: plasticized PVC films, also known as soft PVC films, and unplasticized PVC films, also known as hard PVC films. Polyvinyl chloride plastic film is generally used in the largest amount in electrical aspects, namely electrical adhesive tape. According to its characteristics, it can also be used for protective adhesive tape, luggage adhesive tape, identification adhesive tape, advertising tape, pipeline adhesive tape, etc. It is also widely used in daily life, such as footwear, toys, raincoats, tablecloths, umbrellas, agricultural films, etc.

The degradation of plastics refers to the end of the polymer life cycle and the reduction of molecular weight, manifested as brittleness, cracking, softening, hardening, and loss of mechanical strength. The degradation of ordinary plastic bags takes decades or even hundreds of years, and landfill or incineration of non degradable plastic bags can pollute the environment. Therefore, biodegradable plastic bags are a significant invention.

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Transparency: PE film has lower transparency, while PVC film has better transparency. Tension: PE cling film has low tension, while PVC cling film has high tension. Burning: PE cling film is easy to burn, drips oil, and has a candle smell; PVC cling film burns and emits black smoke, producing a pungent odor. PVC cling film has much stronger self-adhesiveness than PE cling film.

In March 2023, China's PVC powder import volume was 53,900 tons, a year-on-year increase of 92.48%, a month-on-month increase of 14.79%, with an monthly average import price of 729.43 dollars. The export volume was 214,800 tons, a year-on-year decrease of 2.77%, a month-on-month decrease of 5.63%, with an monthly average export price of 803.49 dollars. The total export volume from January to March was 653,000 tons, and the total import volume was 152,600 tons.

In January 2023, China's PVC powder import volume was 51,700 tons, a year-on-year increase of 96.52%, with an average import price of 740.14 per month. The export volume was 210,700 tons, a year-on-year increase of 51.86%, with an average export price of 803.49 per month. In February, China's PVC powder import volume was 47,000 tons, a year-on-year increase of 186.5%, with an average import price of 745.6 per month. The export volume was 227,600 tons, a year-on-year increase of 98.2% and a month-on-month increase of 8.01%, with an average export price of 838.19 per month. The total export volume for January and February was 438,300 tons, and the total import volume was 98,700 tons.

According to the latest statistical data, the total import volume for the year 2022 is 362,200 tons, which is a decrease of 36,700 tons compared to last year. from January to May in 2022, China’s total import of PVC from Chinese Taiwan was 69,685.043 tons, accounting for 57.91% of the total import volume. China imported 36,491.511 tons from Japan, accounting for 30.33% of the total import volume, and imported 6695.914 ton from the USA, accounting for 5.56% of the total import volume.the total export volume of PVC from January to Mary in 2022 was 101.89 tons, an increase of 4.62 tons compared with the previous year, with a growth rate of 4.75%. This increase of export price has rose dramatically. from January to May, China's PVC exports to India were 306237.83 tons, accounting for 30.06% of the total export volume. Exports to Vietnam was 100209.31 tons, accounting for 9.84% of the total export volume. Exports to Turkey was 59700.20 tons, accounting for 5.86% of the total export volume.

In March 2023, the domestic PVC production reached 1.9584 million tons, up 9.45% month-on-month while down 1.28% year-on-year. Among them, the production of calcium carbide method was 1.4712 million tons, up 8.17% month-on-month while down 8.76% year-on-year. The production of ethylene method was 0.4872 million tons, up 10.19% month-on-month and 28.81% year-on-year,a cumulative year-on-year increase of 27%. PVC production accumulated at 5.6616 million tons from January to March.

In February 2023, the domestic PVC production reached 1.7893 million tons, down 6.51% month-on-month while up 1.98% year-on-year. Among them, the production of calcium carbide method was 1.3909 million tons, down 5.40% month-on-month and 3.03% year-on-year. The production of ethylene method was 0.3984 million tons, down 10.19% month-on-month while up 28.81% year-on-year. PVC production accumulated at 3.732 million tons from January to February.

In January 2023, the domestic PVC production reached 1.9139 million tons, up 5.99% month-on-month and 2.86% year-on-year. Among them, the production of calcium carbide method was 1.4703 million tons, up 6.65% month-on-month and down 3.03% year-on-year. The production of ethylene method was 0.4436 million tons, up 3.84% month-on-month and 28.81% year-on-year.

2022 domestic PVC plant operating load rate has declined, excluding the influence of the Chinese New Year in February, the first half of the operating load rate can still be maintained at more than 80%, but 2022 PVC futures shortage is obvious, the price of both futures and spot markets fell sharply, the second half of the year after July PVC plant operating load rate has been declining.