Hope you might got the answer about your both queries, if not let me focus on the same;
Coming to Salary Break up :
Cost to company is divided into components and given a different names to that components like;
1) Basic: it should be 40 -50 % on CTC
2) HRA (House Rent Allowances): it should be 50% on basic;
3) Conveyance: as per the shops and Establishment act should not be more than Rs. 800 per month (800*12 = 9600) should directly mentioned in the CTC
4) LTA: Leave Travel Assessee: Should be 1 time from your basic sal
5) Medical All: it should be 1250 per month (=1250*12=15,000)
6) Special allowances (SA): CTC - (1+2+3+4+5) = Specail Allowances
7) Holiday Work
like this you can create as many as components and be careful while creating all these components, and try to make as many as components which are not taxable income components; (Like Hard furniture, Soft furniture, Child Education, LTA, Medical Allowance, HRA, Car Maintenances, Petrol Reimbursements, Telefone Reimbursements Etc.,)
Coming to ESIC: as you said that you company having exp in industry abour 25 years and now wanted to create a account in ESIC Act, just want to know how many employees where working with your Organization and what is the Salary Bracket you are following, if your salary bracket is more then 10, 000 then no need to open a account in ESIC dept, if not then do approcah to a consultant those have much experience in all dept (like : Labour Dept, PF ESIC dept etc.,)
If you need more details explanation, then feel free to get in touch with the below mentioned contact number or by my web address