When buying fish fry, it is necessary to first carefully investigate whether the broodstock used in the fry breeding unit meets the national aquaculture standards. The fry produced by inbreeding is small, and the fry produced by the first mature broodstock is not a good fry. The quality of fry can be identified from the following aspects.

1. Visual observation of more than 95% of fry should be in line with the developmental stages of the fry concept.

2. The group swims, and the activity is lively. When the water body is slightly stirred in the container, more than 95% of the fry have the ability of top water.

3, countable indicators: malformation rate of less than 5% of herring, other fry should be less than 3%, the injury rate should be less than 1%.

4, more than 95% of the fry, herring should reach 0.8, grass carp should reach 0.7, white praying should reach 0.8, calyx should reach 0.9, group head pupae should reach 0.5 or more.

125mm Traffic Light

Small 125mm led Traffic Light simulation teaching traffic light characteristics of decorative traffic lights
1. The 125-type traffic light adopts the C125MM lamp tube that our company has independently opened the mold, with a moderate size and a unique shape.
2. The 125 type traffic light adopts Taiwan Epistar chip lamp beads, which is bright, eye-catching and distinct in color.
3. The bottom of the 125 type traffic light adopts a waterproof connector for outlet, which has a good waterproof effect.
4. The 125 type traffic light adopts bracket installation, which is simple to operate and easy to install.

Install small LED traffic lights, simulate teaching traffic lights, and pay attention to when decorating traffic lights:
1. At an intersection with a guide lane, drive into the guide lane according to the required direction of travel;
2. Those who are ready to enter the roundabout let motor vehicles that are already in the intersection go ahead;
3. When turning to the left, turn to the left of the center of the intersection. Turn on the turn signal when turning, and turn on the low beam when driving at night;
4. When meeting the release signal, pass in turn;
5. When the stop signal is encountered, stop outside the stop line one by one. If there is no stop line, stop outside the intersection;
6. When turning right when there is a car in the same lane waiting for the release signal, stop and wait one by one;
7. At intersections with no direction indicator lights, turning motor vehicles let straight vehicles and pedestrians go first. Right-turning motor vehicles traveling in the opposite direction let left-turning vehicles go first.

125mm traffic light,125mm mini traffic light,125mm led traffic signal light

Shenzhen Wide Way Optoelectronics Co., Ltd. , https://www.wdmtrafficlight.com