Dental Bib is made of 2 ply tissue and 1 ply PE film, which is used for painent examination.
The dental bibs have two different types, one type is dental bib with tie, the other type is dental bib without tie.
Different colors could be supplied, such as blue, pink, peach,yellow,green, white,lavender.
Two different sizes could be supplied such as 33*45cm, 37*45cm.
The dental bibs are approved by CE,ISO FDA certificates.
Dental Bib Dental Bib,Disposable Dental Bib,Dental Patient Bib,Waterproof Dental Bib Hebei Orient Imp. & Exp. Co. Ltd. , http://www.orientmedcare.com
1. Choose a strong coating field. Choose a mid-tidal zone with small waves, smooth flow, and a little fresh water as a breeding ground. The tidal flats require flatness, small slopes, and a stable coating surface in the windy season, and are generally not covered by sediment. The quality of the coating is better with mud, or slightly mixed with sand and clay. The clay is soft and hard, the coating structure is tight, there is no hole and thin mud layer in the middle, and the water retention performance is good. Every spring and autumn season, coated surfaces often have epiphytic reproduction of diatoms, with a large area of ​​periphyton and a long residence time, providing rich food materials for wolfberry fruit.
2. Construction of Putian. Putian form is a narrow ridge and tile back shape. Putian specifications can be based on the topography and direction of the flow. The field is 50 meters long, 3 meters wide, 1 meter apart to dig a drainage ditch, and the drainage area is open around the paddy field. The width of the ditch is 20 to 25 centimeters, and the depth is 15 to 20 centimeters. The painted surface is slightly tile-shaped. To facilitate drainage.
About 30 to 40 meters above the top of the paddy fields, a short dike should be built to prevent hot tides from flooding the fields and flooding the summer tide.
Tillage cultivation is an important technical measure to improve soil quality, eliminate predators, increase the rate of seedlings, and remove toxic substances such as hydrogen sulfide in the upper layer. It can be used in the winter or spring or within 1 to 2 months before seedling planting. The coating machine will fully plunge 1 to 2 times in Putian, plow till the depth is 40 to 50 centimeters, and smear the surface.
The advantages of this form of Putian are: high terrain, upper realities, and rapid diarrhoea, which are conducive to living in burrowing crickets, and facilitate the management and removal of predators.
3. Carefully selected seedlings. According to the breeding season, the seedlings are divided into "Dong Zi", "Haru Zi" and "Xia Zi". The Dongzi has the best constitution and the survival rate is high, followed by Chunzi and Xiazi the worst. To pick a healthy, lively seed. The method to test the quality of the seedlings: a little shaking or slap the seedlings by hand, the seedlings are tightly closed and the sound of the “嗦-嗦-†sound is good seedlings, and the seedling shells are required to be shiny and full of particles ( It is not a seedling that has been immersed in fresh water. It is of uniform size, with few broken shells and impurities.
The shipment of seedlings must be “grab the time, speed, and light shipment†to minimize the delay in the journey and strive to complete it within 24 hours. Yunmiao should be arranged on sunny days, and the temperature should be 10-15°C. Before transporting seedlings, seedlings should be put into the seawater once (commonly known as "over-tide"), so that it can be spit to muddy, beneficial to breathe. In addition, straw mats should be used to cover the seedlings to prevent rain. Sun exposure.
4. Timely sowing, reasonable dense planting. The end of sowing before and after the Qingming, where conditions permit, can be sowed earlier. At this time, the temperature is low, and the survival rate of seedlings is high. At the same time, the growth period of seedlings can be prolonged and the unit yield can be increased.
Sowing seedlings should be done: sowing, broadcasting, broadcasting. If seedlings are found, they should be sown in time to ensure the seeding density. The seeding rate per acre seedling shall be determined according to the individual size of the seedlings, the strength of the body, the fatness and thinness of the coating, and the propagation of diatoms on the painted surface. The planting volume of the field seedlings is 75-125 kilograms per mu, and the seedling size is 3000-6000 grains per kilogram. Seedlings should be planted within half an hour before the flood tide. Otherwise, if the tide comes, the seedlings will be washed away because of the hidden caverns.
5. Coating management. The seedlings that have just been planted are shallow, and there should be special personnel to inspect the surface to prevent artificial trampling and bird feeding. It is necessary to clear the channels in time and eliminate the water in the fields, so as to keep the channels in the fields between them and keep the flow smooth. The surface is not covered with water. This will not only reduce the enemy's invasion of the field, but also avoid the occurrence of hot-spotting phenomenon due to stagnant water.
There are many predators that endanger the scorpion, including arrowheads, goby, spiny, blue crabs, and ducks, and should be promptly removed. You can use the 1% sodium cyanide solution to spray the water in the field, killing the arrowhead. Goby and other predators are harmless to scorpions.
6. Timely capture. Timely harvesting is crucial to seize the high yield of rice dumplings. The most fertile season in the year is from late May to mid-June. At this time, it is open to picking oysters, which is of good quality and high yield. At the same time, to achieve "deep excavation, fine mining," to minimize broken shells, leaks, and strive to capture more than 90%.
Efficient breeding technology
The Ninghai Fishery Farm in Sanmen Bay, Zhejiang Province, last year bred 350 acres of oysters. This year, a total of 280,000 kilograms of fresh pods were harvested, with an average yield of 800 kilograms per mu. Among them, 7 acres of scientific experiments in Putian have an average yield of 2325 kg per mu. Compared with Daejeon, the output increased 2.5 times, and the yield per mu ranks first in Ningbo. Now the technical points of their scientific education are introduced as follows: