The PETN, Qingdao Packaging Co., Ltd. Qingdao box quotes gift box wholesale Chengyang Qingdao box manufacturers contact phone 15908992036 fixed telephone 86-0532-87917537 Address: Laoshan District, Village Community URL ttp :/ / qdtaian.com original carton auxiliary materials of carton sealing tape and cans are convenient to open the form. ... A leading Canadian company has long been engaged in the meat processing company, developed a new kind of polyester materials, packaging, top thermoforming polyvinylidene chloride co-extruded film sealing, ... currently on the market in some food packaging do To adjust the uniform was a better film head export thickness; each point temperature setting. Enough temperature, raw materials can not melt easily generate particles; temperature is too high, raw materials will alienation ... hot melt adhesive as a new type of carton sealing form of carton packaging, hot melt adhesive sealing has been partially replaced traditional strapping packaging and tape packaging used in carton packaging carton packaging of various food and wine, dairy products. ... The company specializes in the production and sale of cardboard boxes, cartons, color box, stickers, color printing sealing tape, plastic bags, PE bags, OPP bags, garment bags, vacuum bags, cooking bags, food bags, bubble bags, bubble film, packaging tape, stretch film, shrink film, EPE, square bottom bags, packaging materials, our business philosophy puerile, leading into welcome a friend in need and I teach you how to identify toxic plastic life of the bags we often use to food packaging bags, the most food bags plastic products, so we must be careful when in use, because not all plastic packaging tape can be used to hold food secure in some plastic bags, but toxic Oh, below the collar into the packaging material company called centralized approach to identify toxic plastic bags. Before purchase with the eye color of the plastic bags, white non-toxic plastic, transparent or slightly transparent, uniform texture; toxic plastic bags compared to color or white, poor transparency, more turbid plastic surface tension uneven, there are small particles. If the color feel there is no problem, the second step to listen with the ears, the straining ears hand jitter plastic bag, giving crisp sound that is non-toxic plastic; sound small and boring is toxic plastic bag. This off after you enter the next level, touch, hands touching his hand to touch the surface of the plastic bags, it is very smooth, non-toxic; sticky, astringent, waxy flu toxic. Senses to complete the final step with the smell, the smell of non-toxic plastic bags and tasteless; irritating smell or taste unusual toxic. If more than a few off by not happy too early, because some poison in fact hidden deep below uses submerged test method, the plastic bag into the water, hand to the bottom, slightly and other moment, the surface is non-toxic plastic bags, submerged in the bottom that is toxic plastic bags. Last trick is the combustion method, a nontoxic plastic bags flammable, flame tip yellow, partially cyan, burning like a candle tears dripping the paraffin flavor; difficult to burn toxic plastic that is put out from the fire, the flame tip yellow, green at the bottom of softening can be brushed.