Does anyone know what these two mean?

1)

FDA Certification

The U.S. Food and Drug Administration (Food and Drug Administration) is referred to as the FDA, and the FDA is one of the executive agencies established by the U.S. government in the Department of Health and Human Services (DHHS) and the Department of Public **** Health (PHS). As a scientific regulatory agency, FDA is responsible for ensuring the safety of food, cosmetics, drugs, biologicals, medical devices, and radiological products manufactured in or imported into the United States. It is one of the first federal agencies to take consumer protection as its main function

2) Eco-industry is abbreviated as ECO, short for eco-industry, which refers to the group-type industry based on the carrying capacity of ecosystems organized according to the principles of eco-economics and the laws of knowledge-based economy and with highly efficient eco-processes and harmonious eco-industry eco-functions. Unlike traditional industries, eco-industry vertically combines production, circulation, consumption, recycling, environmental protection and capacity building, horizontally couples the production processes of different industries, integrates the production base and the surrounding environment into the whole ecosystem for unified management, and seeks for the efficient utilization of resources and the zero discharge of hazardous wastes to the outside of the system. The social service function of the enterprise rather than the product or profit is the production goal, diversification of the process and product structure is pursued, employment opportunities are increased rather than reduced, and there is a sensitive internal and external information network and expert network, which can adapt to market and environmental changes and change the production process and product structure at any time. Workers are no longer slaves to machines, but conscious designers and regulators of multi-talented industrial processes. The diversity of enterprise development and the degree of advantage, openness and autonomy, strength and flexibility, speed and stability to achieve an organic combination of negative benefits of pollution into a positive benefit of resources. The construction of production industry needs a profound revolution in the field of technology, institutions and culture.

3) The markings of our bullets are mainly painted on the packing boxes, sealed iron boxes and bullet bodies. Embossed on the bottom of the cartridge case are the factory and year designation of the bullet's manufacturing plant. If the two sets of numbers are in the same direction, the top is the factory code and the bottom is the year code.

If there is a decimal point mark, then the one with the decimal point is the year designation.

If there is a group of numbers at the end of the "1" (except with a decimal point), this represents the manufacturer

Year code has the following kinds:

The year before 1953 and the code is common, such as "1949

Years and designations for bullets from 1954 to 1960 vary, such as "54" (or A), "B", "C", "D", "E", "F", "G", "H", "H", "H", "H", "H", "H", "H", "H", "H", "H", "H" and "H". ", "D", "Hux", "Si", "Zi", representing respectively the 1954 to 1960;

After 1961, the last two digits are used for the year code.

So this should be the production year and batch number