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PASTE PVC RESIN P450
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Paste PVC resin PB 1156
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Danshai Chemicals Plastic Grade Talcum Powder 800 mesh
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XH-4G-3 Cornstarch 4 compartment rectangle food container
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S1061 Direct factory wholesale takeaway clear plastic food box 1000ml disposable lunch container
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100ML Based Refill Sublimation Ink for Epson ET-2710 ET-4700 ET-2400 Printer Premium Color Compatible Ink
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Food Grade Carboxyl Methyl Cellulose white powder 1%, 1000-2000
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Terephthalic acid (TPA) is primarily synthesized from petroleum-derived chemicals. It is not naturally occurring in its pure form; rather, it is industrially produced by catalytically oxidizing p-xylene. TPA is a key raw material in the manufacture of polyethylene terephthalate (PET), commonly used in textiles (under the name polyester) and plastic bottles. Additionally, it is utilized in making polyester resins and films. Due to its synthetic origin, direct environmental presence mainly results from industrial discharge or breakdown of consumer goods containing PET. Efforts to recycle PET items can mitigate environmental impacts, highlighting the importance of recycling programs.
Cellulose is a complex carbohydrate or polysaccharide consisting of hundreds to thousands of glucose molecules linked together. Although glucose is a form of sugar, cellulose itself is not sweet and cannot be broken down by human digestive enzymes into sugar molecules for absorption as energy. This is because the β(1→4) glycosidic bonds in cellulose cannot be digested by enzymes in the human digestive tract, unlike the α(1→4) glycosidic bonds found in starch, another polysaccharide made of glucose. Therefore, while cellulose is composed of sugar units (glucose), it does not act as a sugar in the human body but rather as dietary fiber, contributing to digestive health without increasing blood sugar levels.
Epoxy is not rubber but a type of polymer material primarily known for its adhesive, durable, and high strength properties. It is widely used in various industries for coating, bonding, and as a composite material. Epoxy resins can, however, be modified with rubber to enhance certain properties like flexibility or toughness, creating rubber-modified epoxies. These modifications aim to combine the adhesive and mechanical strength of epoxy with the elastic and resistant qualities of rubber, making it suitable for applications requiring both durability and flexibility. However, it's crucial to distinguish that pure epoxy and rubber are distinct materials with different chemical compositions and properties.
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